DTC Detection Logic
WARNING: This page is about a different car, the 2012 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.
| DTC No. |
Trouble diagnosis name |
DTC detecting condition |
Possible cause |
| P1551 |
Battery current sensor circuit low input |
An excessively low voltage from the sensor is sent to ECM. |
- Harness or connectors
(Battery current sensor circuit is open or shorted.)
[Crankshaft position (CKP) sensor circuit is shorted.]
[Camshaft position (CMP) sensor (bank 2) circuit is shorted.]
[Exhaust valve timing (EVT) control position sensor (bank 2) circuit is shorted.]
[Accelerator pedal position (APP) sensor 2 circuit is shorted.]
(EVAP control system pressure sensor circuit is shorted.)
(Refrigerant pressure sensor circuit is shorted.)
- Battery current sensor
- CKP sensor
- CMP sensor (bank 2)
- EVT control position sensor (bank 2)
- APP sensor
- EVAP control system pressure sensor
- Refrigerant pressure sensor
|
| P1552 |
Battery current sensor circuit high input |
An excessively high voltage from the sensor is sent to ECM. |