OBD2 · Powertrain
P05xx codes: vehicle speed, idle control, cruise control and auxiliary inputs
125 codes in this range, all generic — the same meaning on every make. Vehicle speed sensors, idle speed control, cruise control, A/C pressure sensors, the charging system and battery voltage, oil pressure and level, and the brake and clutch switches — the signals the engine computer takes from outside the engine itself.
What usually causes codes in this area
- Speed sensors, switches and their wiring
- A dirty throttle body or idle air control valve
- The battery, the alternator and ground connections
- Vacuum leaks that upset the idle
Can you keep driving?
It depends a lot on the code. Cruise-control and A/C codes can wait; speed-sensor codes affect shifting and the speedometer; charging-system and oil-pressure codes can leave you stranded or damage the engine — check those straight away.
All P05xx codes
| Code | Meaning |
|---|---|
| P0500 | Vehicle Speed Sensor "A" |
| P0501 | Vehicle Speed Sensor "A" Range/Performance |
| P0502 | Vehicle Speed Sensor "A" Circuit Low Input |
| P0503 | Vehicle Speed Sensor "A" Intermittent/Erratic/High |
| P0504 | Brake Switch "A"/"B" Correlation |
| P0505 | Idle Air Control System |
| P0506 | Idle Air Control System RPM Lower Than Expected |
| P0507 | Idle Air Control System RPM Higher Than Expected |
| P0508 | Idle Air Control System Circuit Low |
| P0509 | Idle Air Control System Circuit High |
| P050A | Cold Start Idle Air Control System Performance |
| P050B | Cold Start Ignition Timing Performance |
| P050C | Cold Start Engine Coolant Temperature Performance |
| P050D | Cold Start Rough Idle |
| P050E | Cold Start Engine Exhaust Temperature Too Low |
| P050F | Brake Assist Vacuum Too Low |
| P0510 | Closed Throttle Position Switch |
| P0511 | Idle Air Control Circuit |
| P0512 | Starter Request Circuit |
| P0513 | Incorrect Immobilizer Key |
| P0514 | Battery Temperature Sensor Circuit Range/Performance |
| P0515 | Battery Temperature Sensor Circuit |
| P0516 | Battery Temperature Sensor Circuit Low |
| P0517 | Battery Temperature Sensor Circuit High |
| P0518 | Idle Air Control Circuit Intermittent |
| P0519 | Idle Air Control System Performance |
| P051A | Crankcase Pressure Sensor Circuit |
| P051B | Crankcase Pressure Sensor Circuit Range/Performance |
| P051C | Crankcase Pressure Sensor Circuit Low |
| P051D | Crankcase Pressure Sensor Circuit High |
| P051E | Crankcase Pressure Sensor Circuit Intermittent/Erratic |
| P0520 | Engine Oil Pressure Sensor/Switch Circuit |
| P0521 | Engine Oil Pressure Sensor/Switch Range/Performance |
| P0522 | Engine Oil Pressure Sensor/Switch Low Voltage |
| P0523 | Engine Oil Pressure Sensor/Switch High Voltage |
| P0524 | Engine Oil Pressure Too Low |
| P0525 | Cruise Control Servo Control Circuit Range/Performance |
| P0526 | Fan Speed Sensor Circuit |
| P0527 | Fan Speed Sensor Circuit Range/Performance |
| P0528 | Fan Speed Sensor Circuit No Signal |
| P0529 | Fan Speed Sensor Circuit Intermittent |
| P052A | Cold Start "A" Camshaft Position Timing Over-Advanced (Bank 1) |
| P052B | Cold Start "A" Camshaft Position Timing Over-Retarded (Bank 1) |
| P052C | Cold Start "A" Camshaft Position Timing Over-Advanced (Bank 2) |
| P052D | Cold Start "A" Camshaft Position Timing Over-Retarded (Bank 2) |
| P052E | Positive Crankcase Ventilation Regulator Valve Performance |
| P0530 | A/C Refrigerant Pressure Sensor "A" Circuit |
| P0531 | A/C Refrigerant Pressure Sensor "A" Circuit Range/Performance |
| P0532 | A/C Refrigerant Pressure Sensor "A" Circuit Low |
| P0533 | A/C Refrigerant Pressure Sensor "A" Circuit High |
| P0534 | Air Conditioner Refrigerant Charge Loss |
| P0535 | A/C Evaporator Temperature Sensor Circuit |
| P0536 | A/C Evaporator Temperature Sensor Circuit Range/Performance |
| P0537 | A/C Evaporator Temperature Sensor Circuit Low |
| P0538 | A/C Evaporator Temperature Sensor Circuit High |
| P0539 | A/C Evaporator Temperature Sensor Circuit Intermittent |
| P053A | Positive Crankcase Ventilation Heater Control Circuit/Open |
| P053B | Positive Crankcase Ventilation Heater Control Circuit Low |
| P053C | Positive Crankcase Ventilation Heater Control Circuit High |
| P053F | Cold Start Fuel Pressure Performance |
| P0540 | Intake Air Heater "A" Circuit |
| P0541 | Intake Air Heater "A" Circuit Low |
| P0542 | Intake Air Heater "A" Circuit High |
| P0543 | Intake Air Heater "A" Circuit Open |
| P0544 | Exhaust Gas Temperature Sensor Circuit (Bank 1, Sensor 1) |
| P0545 | Exhaust Gas Temperature Sensor Circuit Low (Bank 1 Sensor 1) |
| P0546 | Exhaust Gas Temperature Sensor Circuit High (Bank 1 Sensor 1) |
| P0547 | Exhaust Gas Temperature Sensor Circuit (Bank 2, Sensor 1) |
| P0548 | Exhaust Gas Temperature Sensor Circuit Low (Bank 2, Sensor 1) |
| P0549 | Exhaust Gas Temperature Sensor Circuit High (Bank 2, Sensor 1) |
| P054A | Cold Start "B" Camshaft Position Timing Over-Advanced (Bank 1) |
| P054B | Cold Start "B" Camshaft Position Timing Over-Retarded (Bank 1) |
| P054C | Cold Start "B" Camshaft Position Timing Over-Advanced (Bank 2) |
| P054D | Cold Start "B" Camshaft Position Timing Over-Retarded (Bank 2) |
| P0550 | Power Steering Pressure Sensor/Switch Circuit |
| P0551 | Power Steering Pressure Sensor/Switch Circuit Range/Performance |
| P0552 | Power Steering Pressure Sensor/Switch Circuit Low Input |
| P0553 | Power Steering Pressure Sensor/Switch Circuit High Input |
| P0554 | Power Steering Pressure Sensor/Switch Circuit Intermittent |
| P0555 | Brake Booster Pressure Sensor Circuit |
| P0556 | Brake Booster Pressure Sensor Circuit Range/Performance |
| P0557 | Brake Booster Pressure Sensor Circuit Low |
| P0558 | Brake Booster Pressure Sensor Circuit High |
| P0559 | Brake Booster Pressure Sensor Circuit Intermittent |
| P0560 | System Voltage |
| P0561 | System Voltage Unstable |
| P0562 | System Voltage Low |
| P0563 | System Voltage High |
| P0564 | Cruise Control Multi-Function Input "A" Circuit |
| P0565 | Cruise Control On Signal |
| P0566 | Cruise Control Off Signal |
| P0567 | Cruise Control Resume Signal |
| P0568 | Cruise Control Set Signal |
| P0569 | Cruise Control Coast Signal |
| P0570 | Cruise Control Accelerate Signal |
| P0571 | Cruise Control/Brake Switch "A" Circuit |
| P0572 | Brake Switch "A" Circuit Low |
| P0573 | Brake Switch "A" Circuit High |
| P0574 | Cruise Control System - Vehicle Speed Too High |
| P0575 | Cruise Control Input Circuit |
| P0576 | Cruise Control Input Circuit Low |
| P0577 | Cruise Control Input Circuit High |
| P0578 | Cruise Control Multi-Function Input "A" Circuit Stuck |
| P0579 | Cruise Control Multi-Function Input "A" Circuit Range/Performance |
| P0580 | Cruise Control Multi-Function Input "A" Circuit Low |
| P0581 | Cruise Control Multi-Function Input "A" Circuit High |
| P0582 | Cruise Control Vacuum Control Circuit/Open |
| P0583 | Cruise Control Vacuum Control Circuit Low |
| P0584 | Cruise Control Vacuum Control Circuit High |
| P0585 | Cruise Control Multi-Function Input "A"/"B" Correlation |
| P0586 | Cruise Control Vent Control Circuit/Open |
| P0587 | Cruise Control Vent Control Circuit Low |
| P0588 | Cruise Control Vent Control Circuit High |
| P0589 | Cruise Control Multi-Function Input "B" Circuit |
| P0590 | Cruise Control Multi-Function Input "B" Circuit Stuck |
| P0591 | Cruise Control Multi-Function Input "B" Circuit Range/Performance |
| P0592 | Cruise Control Multi-Function Input "B" Circuit Low |
| P0593 | Cruise Control Multi-Function Input "B" Circuit High |
| P0594 | Cruise Control Servo Control Circuit/Open |
| P0595 | Cruise Control Servo Control Circuit Low |
| P0596 | Cruise Control Servo Control Circuit High |
| P0597 | Thermostat Heater Control Circuit/Open |
| P0598 | Thermostat Heater Control Circuit Low |
| P0599 | Thermostat Heater Control Circuit High |
| P059F | Active Grille Air Shutter "A" Performance/Stuck Off |
Read the codes from your own car
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