DTC DETECTION LOGIC

DTC No. | Trouble diagnosis name | DTC detecting condition | Possible cause
P2127 | Accelerator pedal position sensor 2 circuit low input | An excessively low voltage from the APP sensor 2 is sent to ECM. |

- Harness or connectors
  (APP sensor 2 circuit is open or shorted.)
  [CKP sensor (POS) circuit is shorted.]
  [CMP sensor (PHASE) (bank 2) circuit is shorted.]
  (Power steering pressure sensor circuit is shorted.)
  (Manifold absolute pressure sensor circuit is shorted.)
  (Refrigerant pressure sensor circuit is shorted.)
- Accelerator pedal position sensor (APP sensor 2)
- Crankshaft position sensor (POS)
- Camshaft position sensor (PHASE) (bank 2)
- Power steering pressure sensor
- Manifold absolute pressure sensor
- Refrigerant pressure sensor

P2128 | Accelerator pedal position sensor 2 circuit high input | An excessively high voltage from the APP sensor 2 is sent to ECM.

DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10 V at idle.
>>GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE

1. Start engine and let it idle for 1 second.
2. Check DTC.

Is DTC detected?
YES>>Go to Diagnosis Procedure (GT-R certified NISSAN dealer).
NO>>INSPECTION END