Diagnostic Trouble Code Chart

HINT:

Parameters listed in the chart may not be exactly the same as your readings due to the type of instrument or other factors. If a DTC is displayed, check the trouble area for the DTC listed in the table below. For details of each DTC. *: MIL flashes when a catalyst damaged misfire is detected.

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P0010

Camshaft Position "A" Actuator Circuit (Bank 1)

- Open or short in Oil Control Valve (OCV) circuit

- ECM

Comes on

DTC stored

ES-66

P0011

Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)

- Valve timing

- Oil Control Valve (OCV)

- OCV filter

- Camshaft timing gear assembly

- ECM

Comes on

DTC stored

ES-71

P0012

Camshaft Position "A" - Timing Over-Retarded (Bank 1)

- Same as DTC P0011

Comes on

DTC stored

ES-71

P0016

Crankshaft Position -Camshaft Position Correlation (Bank 1 Sensor A)

- Mechanical system (Timing chain has jumped tooth or chain stretched)

- ECM

Comes on

DTC stored

ES-76

P0031

Oxygen (A/F) Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

- Open in Air-Fuel Ratio (A/F) sensor heater circuit

- A/F sensor heater

- A/F HEATER relay

- ECM

Comes on

DTC stored

ES-78

P0032

Oxygen (A/F) Sensor Heater Control Circuit High (Bank 1 Sensor 1)

- Short in Air-Fuel Ratio (A/F) sensor heater circuit

- A/F sensor heater

- A/F HEATER relay

- ECM

Comes on

DTC stored

ES-78

P0037

Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 2)

- Open or short in Heated Oxygen (HO2) sensor heater circuit

- HO2 sensor heater

- EFI relay

- ECM

Comes on

DTC stored

ES-83

P0038

Oxygen Sensor Heater Control Circuit High (Bank 1 Sensor 2)

- Open or short in Heated Oxygen (HO2) sensor heater circuit

- HO2 sensor heater

- EFI relay

- ECM

Comes on

DTC stored

ES-83

P0100

Mass or Volume Air Flow Circuit

- Open or short in Mass Air Flow (MAF) meter circuit

- MAF meter

- ECM

Comes on

DTC stored

ES-88

P0101

Mass Air Flow Circuit Range / Performance Problem

- Mass Air Flow (MAF) meter

Comes on

DTC stored

ES-95

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P0102

Mass or Volume Air Flow Circuit Low Input

- Open or short in Mass Air Flow (MAF) meter circuit

- MAF meter

- ECM

Comes on

DTC stored

ES-88

P0103

Mass or Volume Air Flow Circuit High Input

- Open or short in Mass Air Flow (MAF) meter circuit

- MAF meter

- ECM

Comes on

DTC stored

ES-88

Temperature Circuit

- Open or short in Intake Air Temperature (IAT) sensor circuit

- IAT sensor (built into MAF meter)

- ECM

Comes on

DTC stored

ES-97

Temperature Circuit Low Input

- Short in Intake Air Temperature (IAT) sensor circuit

- IAT sensor (built into MAF meter)

- ECM

Comes on

DTC stored

ES-97

Temperature Circuit High Input

- Open in Intake Air Temperature (IAT) sensor circuit

- IAT sensor (built into MAF meter)

- ECM

Comes on

DTC stored

ES-97

P0115

Engine Coolant Temperature Circuit

- Open or short in Engine Coolant Temperature (ECT) sensor circuit

- ECT sensor

- ECM

Comes on

DTC stored

ES-102

P0116

Engine Coolant Temperature Circuit Range / Performance Problem

- Engine Coolant Temperature (ECT) sensor

Comes on

DTC stored

ES-107

P0117

Engine Coolant Temperature Circuit Low Input

- Short in Engine Coolant Temperature (ECT) sensor circuit

- ECT sensor

- ECM

Comes on

DTC stored

ES-102

P0118

Engine Coolant Temperature Circuit High Input

- Open in Engine Coolant Temperature (ECT) sensor circuit

- ECT sensor

- ECM

Comes on

DTC stored

ES-102

P0120

Throttle / Pedal Position Sensor / Switch "A" Circuit

- Throttle Position (TP) sensor (built into throttle body)

- ECM

Comes on

DTC stored

ES-110

P0121

Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem

- Throttle Position (TP) sensor (built into throttle body)

Comes on

DTC stored

ES-118

P0122

Throttle / Pedal Position Sensor / Switch "A" Circuit Low Input

- Throttle Position (TP) sensor (built into throttle body)

- Short in VTA1 circuit

- Open in VC circuit

- ECM

Comes on

DTC stored

ES-110

ES

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P0123

Throttle / Pedal Position Sensor / Switch "A" Circuit High Input

- Throttle Position (TP) sensor (built into throttle body)

- Open in VTA1 circuit

- Open in E2 circuit

- Short between VC and VTA1 circuits

- ECM

Comes on

DTC stored

ES-110

P0125

Insufficient Coolant Temperature for Closed Loop Fuel Control

- Cooling system

- Engine coolant temperature sensor

- Thermostat

Comes on

DTC stored

ES-120

P0128

Coolant Thermostat (Coolant

Temperature Below Thermostat Regulating Temperature)

- Thermostat

- Cooling system

- Engine coolant temperature sensor

- ECM

Comes on

DTC stored

ES-123

P0136

Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2)

- Open or short in Heated Oxygen (HO2) sensor (sensor 2) circuit

- HO2 sensor heater (sensor 2)

- EFI relay

- Gas leakage from exhaust system

Comes on

DTC stored

ES-126

P0137

Heated Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2)

- Open in Heated Oxygen (HO2) sensor (sensor 2) circuit

- HO2 sensor heater (sensor 2)

- EFI relay

- Gas leakage from exhaust system

Comes on

DTC stored

ES-126

P0138

Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)

- Short in Heated Oxygen (HO2) sensor (sensor 2) circuit

- ECM internal circuit malfunction

Comes on

DTC stored

ES-126

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P0171

System Too Lean (Bank 1)

- Air induction system

- Injector blockage

- Mass Air Flow (MAF) meter

- Engine Coolant Temperature (ECT) sensor

- Fuel pressure

- Gas leakage from exhaust system

- Open or short in Air-Fuel Ratio (A/F) sensor(sensor 1) circuit

- A/F sensor heater (sensor 1)

- A/F HEATER relay

- A/F sensor heater and A/F HEATER relay circuits

- PCV valve and hose

- PCV hose connections

- ECM

Comes on

DTC stored

ES-144

P0172

System Too Rich (Bank 1)

- Injector leakage or blockage

- Mass Air Flow (MAF) meter

- Engine Coolant Temperature (ECT) sensor

- Ignition system

- Fuel pressure

- Gas leakage from exhaust system

- Open or short in Air-Fuel Ratio (A/F) sensor (sensor 1) circuit

- A/F sensor heater (sensor 1)

- A/F HEATER relay

- A/F sensor heater and A/F HEATER relay circuits

- ECM

Comes on

DTC stored

ES-144

P0220

Throttle / Pedal Position Sensor / Switch "B" Circuit

- Throttle Position (TP) sensor (built into throttle body)

- ECM

Comes on

DTC stored

ES-110

P0222

Throttle / Pedal Position Sensor / Switch "B" Circuit Low Input

- Throttle Position (TP) sensor (built into throttle body)

- Short in VTA2 circuit

- Open in VC circuit

- ECM

Comes on

DTC stored

ES-110

ES

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P0223

Throttle / Pedal Position Sensor / Switch "B" Circuit High Input

- Throttle Position (TP) sensor (built into throttle body)

- Open in VTA2 circuit

- Open in E2 circuit

- Short between VC and VTA2 circuits

- ECM

Comes on

DTC stored

ES-110

P0300

Random / Multiple Cylinder Misfire Detected

- Open or short in engine wire harness

- Connector connection

- Vacuum hose connections

- Ignition system

- Injector

- Fuel pressure

- Mass Air Flow (MAF) meter

- Air induction system

- Engine Coolant Temperature (ECT) sensor

- Compression pressure

- Valve clearance

- Valve timing

- PCV valve and hose

- PCV hose connections

- ECM

Comes on*

DTC stored

ES-156

P0301

Cylinder 1 Misfire Detected

- Same as P0300

Comes on*

DTC stored

ES-156

P0302

Cylinder 2 Misfire Detected

- Same as P0300

Comes on*

DTC stored

ES-156

P0303

Cylinder 3 Misfire Detected

- Same as P0300

Comes on*

DTC stored

ES-156

P0304

Cylinder 4 Misfire Detected

- Same as P0300

Comes on*

DTC stored

ES-156

P0327

Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)

- Short in knock sensor circuit

- Knock sensor

- ECM

Comes on

DTC stored

ES-167

P0328

Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)

- Open in knock sensor circuit

- Knock sensor

- ECM

Comes on

DTC stored

ES-167

P0335

Crankshaft Position Sensor "A" Circuit

- Open or short in Crankshaft Position (CKP) sensor circuit

- CKP sensor

- Sensor plate (CKP sensor plate)

- ECM

Comes on

DTC stored

ES-171

P0339

Crankshaft Position Sensor "A" Circuit Intermittent

- Same as P0335

-

DTC stored

ES-171

P0340

Camshaft Position Sensor "A" Circuit (Bank 1 or Single Sensor)

- Open or short in Camshaft Position (CMP) sensor circuit

- CMP sensor

- Camshaft

- Jumped tooth of timing chain

- ECM

Comes on

DTC stored

ES-176

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P0341

Camshaft Position Sensor "A" Circuit Range / Performance (Bank 1 or Single Sensor)

- Same as DTC P0340

Comes on

DTC stored

ES-176

P0351

Ignition Coil "A" Primary / Secondary Circuit

- Ignition system

- Open or short in IGF1 or IGT circuit (1 to 4) between ignition coil with igniter and ECM

- No. 1 to No. 4 ignition coils with igniters

- ECM

Comes on

DTC stored

ES-180

P0352

Ignition Coil "B" Primary / Secondary Circuit

- Same as DTC P0351

Comes on

DTC stored

ES-180

P0353

Ignition Coil "C" Primary / Secondary Circuit

- Same as DTC P0351

Comes on

DTC stored

ES-180

P0354

Ignition Coil "D" Primary / Secondary Circuit

- Same as DTC P0351

Comes on

DTC stored

ES-180

P0412

Secondary Air Injection System Switching Valve "A" Circuit

- Open in Air Switching Valve (ASV) drive circuit

- Short between ASV drive circuit and +B circuit

- Short between ASV drive circuit and body ground

- Air Injection Control Driver (AID)

- ECM

Comes on

DTC stored

ES-189

P0418

Secondary Air Injection System Control "A" Circuit

- Open in air pump drive circuit

- Short between air pump drive circuit and +B circuit

- Short between air pump drive circuit and body ground

- Air pump

- Air Injection Control Driver (AID)

- ECM

Comes on

DTC stored

ES-199

P0420

Catalyst System Efficiency Below Threshold (Bank 1)

- Front exhaust pipe (TWC)

- Gas leakage from exhaust system

- Heated Oxygen (HO2) sensor (sensor 2)

Comes on

DTC stored

ES-206

P043E

Evaporative Emission System Reference Orifice Clog Up

- Canister pump module

- Connector/Wire harness (Canister pump module - ECM)

- Leakage from EVAP system

Comes on

DTC stored

ES-213

ES

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P043F

Evaporative Emission System Reference Orifice High Flow

- Canister pump module

- Connector/Wire harness (Canister pump module -ECM)

- Leakage from EVAP system

Comes on

DTC stored

ES-213

P0441

Evaporative Emission Control System Incorrect Purge Flow

- Purge VSV

- Connector/wire harness (Purge VSV

- Canister pump module

- Leakage from EVAP line (Purge VSV -Intake manifold)

- Leakage from EVAP system

- ECM

Comes on

DTC stored

ES-220

P0450

Evaporative Emission Control System Pressure Sensor / Switch

- Canister pump module

- ECM

Comes on

DTC stored

ES-228

P0451

Evaporative Emission Control System Pressure Sensor Range / Performance

- Canister pump module

- Connector/Wire harness (Canister pump module - ECM)

- ECM

Comes on

DTC stored

ES-228

P0452

Evaporative Emission Control System Pressure Sensor / Switch Low Input

- Canister pump module

- Connector/Wire harness (Canister pump module - ECM)

- ECM

Comes on

DTC stored

ES-228

P0453

Evaporative Emission Control System Pressure Sensor / Switch High Input

- Canister pump module

- Connector/Wire harness (Canister pump module - ECM)

- ECM

Comes on

DTC stored

ES-228

P0455

Evaporative Emission Control System Leak Detected (Gross Leak)

- Leakage from EVAP line (Canister - Fuel tank)

- Leakage from EVAP line (Purge VSV -Canister)

- Canister pump module

- Leakage from fuel tank

- Leakage from canister

Comes on

DTC stored

ES-237

P0456

Evaporative Emission Control System Leak Detected (Very Small Leak)

- Same as DTC P0455

Comes on

DTC stored

ES-237

P0500

Vehicle Speed Sensor"A"

- Open or short in speed signal circuit

- Combination meter

- Skid control ECU

Comes on

DTC stored

ES-243

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P0503

Vehicle Speed Sensor"A" Intermittent / Erratic / High

- Open or short in speed signal circuit

- Combination meter

- Skid control ECU

-

DTC stored

ES-243

P0504

Brake Switch "A" / "B" Correlation

- Short in stop light switch signal circuit

- STOP fuse

- Stop light switch

- ECM

-

DTC stored

ES-247

P0505

Idle Control System Malfunction

- Electronic Throttle Control System (ETCS)

- Air induction system

- PCV hose connection

- ECM

Comes on

DTC stored

ES-252

P0560

System Voltage

- Open in back up power source circuit

- EFI fuse

- ECM

Comes on

DTC stored

ES-256

P0604

Internal Control Module Random Access Memory (RAM) Error

- ECM

Comes on

DTC stored

ES-260

P0606

ECM/PCM Processor

- ECM

-

DTC stored

ES-260

P0607

Control Module Performance

- ECM

Comes on

DTC stored

ES-260

P0617

Starter Relay Circuit High

- Park/Neutral Position (PNP) switch (for A/T)

- Clutch start switch (for M/T)

- Starter relay circuit

- Ignition switch

- ECM

Comes on

DTC stored

ES-262

P0630

VIN not Programmed or Mismatch - ECM / PCM

- ECM

Comes on

DTC stored

ES-26e

P0657

Actuator Supply Voltage Circuit / Open

- ECM

Comes on

DTC stored

ES-260

P1500

AC Inverter Malfunction

- Open in speed signal circuit

- Short between idle-up signal circuit and +B circuit

- Voltage inverter

- ECM

Comes on

DTC stored

ES-270

ES

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P1613

Secondary Air Injection Driver Malfunction

- Air Injection Control Driver (AID)

- Open in AID ground circuit

- Short in diagnostic information signal circuit (AID - ECM)

- Open or short in air pump or air switching valve command signal circuit (AID -ECM)

- Open or short in AID power source circuit

- Open in diagnostic information signal circuit (AID - ECM)

- ECM

Comes on

DTC stored

ES-274

P2102

Throttle Actuator Control Motor Circuit Low

- Open in throttle actuator circuit

- Throttle actuator

- ECM

Comes on

DTC stored

ES-286

P2103

Throttle Actuator Control Motor Circuit High

- Short in throttle actuator circuit

- Throttle actuator

- Throttle valve

- Throttle body assembly

- ECM

Comes on

DTC stored

ES-286

P2111

Throttle Actuator Control System -Stuck Open

- Throttle actuator

- Throttle body assembly

- Throttle valve

Comes on

DTC stored

ES-290

P2112

Throttle Actuator Control System -Stuck Closed

- Throttle actuator

- Throttle body assembly

- Throttle valve

Comes on

DTC stored

ES-290

P2118

Throttle Actuator Control Motor Current Range / Performance

- Open in Electronic Throttle Control System (ETCS) power source circuit

- ETCS fuse

- ECM

Comes on

DTC stored

ES-293

P2119

Throttle Actuator Control Throttle Body Range / Performance

- Electronic Throttle Control System (ETCS)

- ECM

Comes on

DTC stored

ES-298

P2120

Throttle / Pedal Position Sensor / Switch "D" Circuit

- Accelerator pedal position sensor

- ECM

Comes on

DTC stored

ES-301

P2121

Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance

- Accelerator pedal position sensor circuit

- Accelerator pedal position sensor

- ECM

Comes on

DTC stored

ES-309

P2122

Throttle / Pedal Position Sensor / Switch "D" Circuit Low Input

- Accelerator pedal position sensor

- Open in VCP1 circuit

- Open or ground short in VPA circuit

- ECM

Comes on

DTC stored

ES-301

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P2123

Throttle / Pedal Position Sensor / Switch "D" Circuit High Input

- Accelerator pedal position sensor

- Open in EPA1 circuit

- ECM

Comes on

DTC stored

ES-301

P2125

Throttle / Pedal Position Sensor / Switch "E" Circuit

- Accelerator pedal position sensor

- ECM

Comes on

DTC stored

ES-301

P2127

Throttle / Pedal Position Sensor / Switch "E" Circuit Low Input

- Accelerator pedal position sensor

- Open in VCP2 circuit

- Open or ground short in VPA2 circuit

- ECM

Comes on

DTC stored

ES-301

P2128

Throttle / Pedal Position Sensor / Switch "E" Circuit High Input

- Accelerator pedal position sensor

- Open in EPA2 circuit

- ECM

Comes on

DTC stored

ES-301

P2135

Throttle / Pedal Position Sensor / Switch "A" / "B" Voltage Correlation

- Short between VTA1 and VTA2 circuits

- TP sensor (built into throttle body)

- ECM

Comes on

DTC stored

ES-110

P2138

Throttle / Pedal Position Sensor / Switch "D" / "E" Voltage Correlation

- Short between VPA and VPA2 circuits

- Accelerator pedal position sensor

- ECM

Comes on

DTC stored

ES-301

P2195

Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1)

- Open or short in Air-Fuel Ratio (A/F) sensor (sensor 1) circuit

- A/F sensor (sensor 1) heater

- A/F HEATER relay

- A/F sensor heater and relay circuits

- Air induction system

- Fuel pressure

- Injector

- ECM

Comes on

DTC stored

ES-312

P2196

Oxygen (A/F) Sensor Signal Stuck Rich (Bank 1 Sensor 1)

- Open or short in Air-Fuel Ratio (A/F) sensor (sensor 1) circuit

- A/F sensor (sensor 1) heater

- A/F HEATER relay

- A/F sensor heater and relay circuits

- Air induction system

- Fuel pressure

- Injector

- ECM

Comes on

DTC stored

ES-312

ES

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P2238

Oxygen (A/F) Sensor Pumping Current Circuit Low (Bank 1 Sensor 1)

- Open or short in Air-Fuel Ratio (A/F) sensor (sensor 1) circuit

- A/F sensor heater

- A/F HEATER relay

- A/F sensor heater and relay circuits

- ECM

Comes on

DTC stored

ES-328

P2239

Oxygen (A/F) Sensor Pumping Current Circuit High (Bank 1 Sensor 1)

- Same as DTC P2238

Comes on

DTC stored

ES-328

P2252

Oxygen (A/F) Sensor Reference Ground Circuit Low (Bank 1 Sensor 1)

- Same as DTC P2238

Comes on

DTC stored

ES-328

P2253

Oxygen (A/F) Sensor Reference Ground Circuit High (Bank 1 Sensor 1)

- Same as DTC P2238

Comes on

DTC stored

ES-328

P2401

Evaporative Emission Leak Detection Pump Stuck OFF

- Canister pump module

- Connector/Wire harness (Canister pump module - ECM)

- Leakage from EVAP system

Comes on

DTC stored

ES-334

P2402

Evaporative Emission Leak Detection Pump Stuck ON

- Canister pump module

- Connector/Wire harness (Canister pump module - ECM)

- ECM

Comes on

DTC stored

ES-334

P2419

Evaporative Emission System Switching Valve Control Circuit Low

- Canister pump module

- Connector/Wire harness (Canister pump module - ECM)

- ECM

Comes on

DTC stored

ES-341

P2420

Evaporative Emission System Switching Valve Control Circuit High

- Canister pump module

- Connector/Wire harness (Canister pump module - ECM)

- Leakage from EVAP system

Comes on

DTC stored

ES-341

P2430

Secondary Air Injection System Air Flow / Pressure Sensor Circuit Bank1

- Pressure sensor

- Open or short in pressure sensor circuit

- ECM

Comes on

DTC stored

ES-348

P2431

Secondary Air Injection System Air Flow / Pressure Sensor Circuit Range / Performance Bank1

- Pressure sensor

- Open or short in pressure sensor circuit

- ECM

Comes on

DTC stored

ES-348

DTC No.

Detection Item

Trouble Area

MIL

Memory

See page

P2432

Secondary Air Injection System Air Flow / Pressure Sensor Circuit Low Bankl

- Pressure sensor

- Open or short in pressure sensor circuit

- ECM

Comes on

DTC stored

ES-348

P2433

Secondary Air Injection System Air Flow / Pressure Sensor Circuit High Bankl

- Pressure sensor

- Open or short in pressure sensor circuit

- ECM

Comes on

DTC stored

ES-348

P2440

Secondary Air Injection System Switching Valve Stuck Open Bankl

- Air switching valve (ASV)

- Open or short in ASV circuit

- Pressure sensor

- Pressure sensor circuit

- Air Injection Control Driver (AID)

- ECM

Comes on

DTC stored

ES-354

P2441

Secondary Air Injection System Switching Valve Stuck Close Bankl

- Air switching valve (ASV)

- Open or short in ASV circuit

- Vacuum hose (ASV

- pressure sensor)

- Air injection hose

- Pressure sensor

- Pressure sensor circuit

- Air Injection Control Driver (AID)

- ECM

Comes on

DTC stored

ES-354

P2444

Secondary Air Injection System Pump Stuck On Bankl

- Short in air pump circuit

- Air pump

- Open or short in pressure sensor circuit

- Pressure sensor

- Air Injection Control Driver (AID)

- ECM

Comes on

DTC stored

ES-368

P2445

Secondary Air Injection System Pump Stuck Off Bankl

- Air pump

- Open in air pump circuit

- Air injection system piping

- Vacuum hose

- Pressure sensor

- Open or short in pressure sensor circuit

- Air Injection Control Driver (AID)

- ECM

Comes on

DTC stored

ES-368

P2610

ECM / PCM Internal Engine Off Timer Performance

- ECM

Comes on

DTC stored

ES-380

P2A00

A/F Sensor Circuit Slow Response (Bank 1 Sensor 1)

- Open or short in air-fuel ratio sensor circuit

- ECM

Comes on

DTC stored

ES-382

Do It Yourself Car Diagnosis

Do It Yourself Car Diagnosis

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Responses

  • gertude
    Where is the air fuel heater sensor circuit in a 2001 toyota truck?
    7 years ago

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