Es

DTC No.

DTC Detection Conditions

Trouble Areas

P2120

VPA fluctuates rapidly beyond upper and lower malfunction thresholds for 0.5 seconds or more (1 trip detection logic)

• Accelerator Pedal Position (APP) sensor

• ECM

P2122

VPA 0.4 V or less for 0.5 seconds or more when accelerator pedal fully released (1 trip detection logic)

• Open in VCP1 circuit

• Open or ground short in VPA circuit

• ECM

P2123

VPA 4.8 V or more for 2.0 seconds or more (1 trip detection logic)

• ECM

P2125

VPA2 fluctuates rapidly beyond upper and lower malfunction thresholds for 0.5 seconds or more (1 trip detection logic)

• ECM

P2127

VPA2 1.2 V or less for 0.5 seconds or more when accelerator pedal fully released (1 trip detection logic)

• Open in VCP2 circuit

• Open or ground short in VPA2 circuit

• ECM

P2128

Conditions (a) and (b) continue for 2.0 seconds or more (1 trip detection logic)

(b) VPA between 0.4 V and 3.45 V

• Open in EPA2 circuit

• ECM

P2138

Condition (a) or (b) continues for 2.0 seconds or more (1 trip detection logic)

(a) Difference between VPA and VPA2 0.02 V or less

(b) VPA 0.4 V or less and VPA2 1.2 V or less

• Short between VPA and VPA2 circuits

When any of these DTCs are set, check the APP sensor voltage by selecting the following menu items on an intelligent tester: DIAGNOSIS / ENHANCED OBD II / DATA LIST / PRIMARY / ACCEL POS #1 and ACCEL POS #2.

Trouble Areas

ACCEL POS #1 When AP Released

ACCEL POS #2 When AP Released

ACCEL POS #1 When AP Depressed

ACCEL POS #2 When AP Depressed

VCP circuit open

0 to 0.2 V

0 to 0.2 V

0 to 0.2 V

0 to 0.2 V

Open or ground short in VPA circuit

0 to 0.2 V

1.2 to 2.0 V

0 to 0.2 V

3.4 to 5.0 V

Open or ground short in VPA2 circuit

0.5 to 1.1 V

0 to 0.2 V

2.6 to 4.5 V

0 to 0.2 V

EPA circuit open

4.5 to 5.0 V

4.5 to 5.0 V

4.5 to 5.0 V

4.5 to 5.0 V

Normal condition

0.5 to 1.1 V

1.2 to 2.0 V

2.6 to 4.5 V

• Accelerator pedal positions are expressed as voltages.

• AP denotes for Accelerator Pedal.

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