DTC P2122

DTC P2122	APP sensor NO. 1 circuit low input
DETECTION CONDITION	The PCM monitors the input voltage from the APP sensor NO. 1 when the engine is running. If the input voltage is less than 0.3 V , the PCM determines that the APP sensor NO. 1 circuit input voltage is low. Diagnostic support note This is a continuous monitor (CCM). The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle. FREEZE FRAME DATA (Mode 2/Mode 12) is available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	APP sensor connector or terminals malfunction Short to ground in wiring harness between APP sensor terminal D and PCM terminal 1AL Short to ground in wiring harness between APP sensor terminal F and PCM terminal 1AO PCM connector or terminals malfunction Open circuit in wiring harness between APP sensor terminal D and PCM terminal 1AL Open circuit in wiring harness between APP sensor terminal F and PCM terminal 1AO APP sensor NO. 1 malfunction PCM malfunction

APP sensor NO. 1 circuit low input

DETECTION CONDITION

The PCM monitors the input voltage from the APP sensor NO. 1 when the engine is running. If the input voltage is less than 0.3 V , the PCM determines that the APP sensor NO. 1 circuit input voltage is low.

Diagnostic support note

This is a continuous monitor (CCM).
The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
FREEZE FRAME DATA (Mode 2/Mode 12) is available.
The DTC is stored in the PCM memory.

POSSIBLE CAUSE

APP sensor connector or terminals malfunction
Short to ground in wiring harness between APP sensor terminal D and PCM terminal 1AL
Short to ground in wiring harness between APP sensor terminal F and PCM terminal 1AO
PCM connector or terminals malfunction
Open circuit in wiring harness between APP sensor terminal D and PCM terminal 1AL
Open circuit in wiring harness between APP sensor terminal F and PCM terminal 1AO
APP sensor NO. 1 malfunction
PCM malfunction

DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA (MODE 12) HAS BEEN RECORDED Has the FREEZE FRAME DATA (Mode 12) been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA (Mode 12) on the repair order, then go to the next step.
2	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
2		No	Go to the next step.
3	INSPECT APP SENSOR CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect the APP sensor connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 8.
3		No	Go to the next step.
4	INSPECT APP SENSOR NO. 1 CIRCUIT FOR SHORT TO GROUND APP sensor connector is disconnected. Turn the ignition switch off. Inspect for continuity between the following circuits: APP sensor terminal D (wiring harness-side) and body ground APP sensor terminal F (wiring harness-side) and body ground Is there continuity?	Yes	If the short to ground circuit could be detected: Repair or replace the wiring harness for a possible short to ground. If the short to ground circuit could not be detected: Replace the PCM (short to ground in the PCM internal circuit). (See PCM REMOVAL/INSTALLATION Go to Step 8.
4		No	Go to the next step.
5	INSPECT PCM CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect the PCM connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion). Is there any malfunction?	Yes	Repair or replace the connector and/or terminals, then go to Step 8.
5		No	Go to the next step.
6	INSPECT APP SENSOR NO. 1 CIRCUIT FOR OPEN CIRCUIT APP sensor and PCM connectors are disconnected. Turn the ignition switch off. Inspect for continuity between the following circuits: APP sensor terminal D (wiring harness-side) and PCM terminal 1AL (wiring harness-side) APP sensor terminal F (wiring harness-side) and PCM terminal 1AO (wiring harness-side) Is there continuity?	Yes	Go to the next step.
6		No	Repair or replace the wiring harness for a possible open circuit, then go to Step 8.
7	INSPECT APP SENSOR NO. 1 Inspect the APP sensor NO. 1. (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION ). Is there any malfunction?	Yes	Replace the accelerator pedal, then go to the next step. (See ACCELERATOR PEDAL REMOVAL/INSTALLATION ).
7		No	Go to the next step.
8	VERIFY TROUBLESHOOTING OF DTC P2122 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE ). Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST ). Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION ).
8		No	Go to the next step.
9	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE ". (See AFTER REPAIR PROCEDURE ). Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE ).
9		No	DTC troubleshooting completed.