DFFX fault codes
5,361 codes · 6 vehicle records · 0 ECU records · 0 live-data parameters
Codes 5,361
| Code | Description | Brands | System |
|---|---|---|---|
| P051A | Crankcase Pressure Sensor Circuit | 20 | Powertrain |
| P051B | Crankcase Pressure Sensor Circuit Range/Performance | 25 | Powertrain |
| P051C | Crankcase Pressure Sensor Circuit Low | 25 | Powertrain |
| P051D | Crankcase Pressure Sensor Circuit High | 25 | Powertrain |
| P051E | Crankcase Pressure Sensor Circuit Intermittent/Erratic | 22 | Powertrain |
| P051F | PCV filter restriction | 19 | Powertrain |
| P0520 | Engine Oil Pressure Sensor/Switch Circuit | 35 | Powertrain |
| P0521 | Engine Oil Pressure Sensor/Switch Circuit Range/Performance | 38 | Powertrain |
| P0522 | Engine Oil Pressure Sensor/Switch Circuit Low Voltage | 35 | Powertrain |
| P0523 | Engine Oil Pressure Sensor/Switch Circuit High Voltage | 32 | Powertrain |
| P0524 | Engine Oil Pressure Too Low | 40 | Powertrain |
| P0525 | Cruise Control Servo Control Circuit Range/Performance | 27 | Powertrain |
| P0526 | Fan Speed Sensor Circuit | 24 | Powertrain |
| P0527 | Fan Speed Sensor Circuit Range/Performance | 25 | Powertrain |
| P0528 | Fan Speed Sensor Circuit No Signal | 22 | Powertrain |
| P0529 | Fan Speed Sensor Circuit Intermittent | 23 | Powertrain |
| P052A | Built-in System Interface (BSI) failure | 25 | Powertrain |
| P052B | Power generation level fault (alternator output) | 24 | Powertrain |
| P052C | Cold start 'A' camshaft position timing over-advanced bank 2 | 25 | Powertrain |
| P052D | Cold start 'A' camshaft position timing over-retarded bank 2 | 24 | Powertrain |
| P052E | PCV regulator valve performance | 23 | Powertrain |
| P0530 | A/C Refrigerant Pressure Sensor Circuit | 36 | Powertrain |
| P0531 | A/C Refrigerant Pressure Sensor Circuit Range/Performance | 29 | Powertrain |
| P0532 | A/C Refrigerant Pressure Sensor Circuit Low Input | 40 | Powertrain |
| P0533 | A/C Refrigerant Pressure Sensor Circuit High Input | 39 | Powertrain |
| P0534 | A/C Refrigerant Charge Loss | 30 | Powertrain |
| P0535 | A/C Evaporator Temperature Sensor Circuit | 28 | Powertrain |
| P0536 | A/C Evaporator Temperature Sensor Circuit Range/Performance | 25 | Powertrain |
| P0537 | A/C Evaporator Temperature Sensor Circuit Low | 29 | Powertrain |
| P0538 | A/C Evaporator Temperature Sensor Circuit High | 29 | Powertrain |
| P0539 | A/C Evaporator Temperature Sensor Circuit Intermittent | 22 | Powertrain |
| P053A | PCV heater 'A' control circuit /open | 26 | Powertrain |
| P053B | PCV heater 'A' control circuit low | 26 | Powertrain |
| P053C | PCV heater 'A' control circuit high | 26 | Powertrain |
| P0540 | Intake Air Heater A Circuit | 27 | Powertrain |
| P0541 | Intake Air Heater A Circuit Low | 23 | Powertrain |
| P0542 | Intake Air Heater A Circuit High | 23 | Powertrain |
| P0543 | Intake Air Heater A Circuit Open | 24 | Powertrain |
| P0544 | Exhaust Gas Temperature Sensor Circuit (Bank 1 Sensor 1) | 33 | Powertrain |
| P0545 | Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 1) | 37 | Powertrain |
| P0546 | Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 1) | 37 | Powertrain |
| P0547 | Exhaust Gas Temperature Sensor Circuit (Bank 2 Sensor 1) | 28 | Powertrain |
| P0548 | Exhaust Gas Temperature Sensor Circuit Low (Bank 2 Sensor 1) | 29 | Powertrain |
| P0549 | Exhaust Gas Temperature Sensor Circuit High (Bank 2 Sensor 1) | 28 | Powertrain |
| P054A | Cold start 'B' camshaft position timing over-advanced bank 1 | 24 | Powertrain |
| P054B | Cold start 'B' camshaft position timing over-retarded bank 1 | 23 | Powertrain |
| P054C | Cold start 'B' camshaft position timing over-advanced bank 2 | 24 | Powertrain |
| P054D | Cold start 'B' camshaft position timing over-retarded bank 2 | 23 | Powertrain |
| P0550 | Power Steering Pressure Sensor Circuit | 30 | Powertrain |
| P0551 | Power Steering Pressure Sensor Circuit Range/Performance | 26 | Powertrain |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.