Fuel Pump Control Circuit Range/Performance
The P062A code indicates that the Engine Control Module (ECM) has detected a malfunction in the fuel pump control circuit, specifically that the actual fuel pump speed or voltage is outside the expected range. This can be caused by a faulty fuel pump, a defective fuel pump relay or driver module, wiring issues, or a problem with the ECM itself. The fuel pump control circuit regulates the pump's operation to maintain proper fuel pressure; when performance deviates, it can lead to drivability issues.
1. Most Common Causes
- Faulty fuel pump
- Defective fuel pump relay or driver module
- Open or shorted wiring in the fuel pump control circuit
- Corroded or loose electrical connectors
- Failed Engine Control Module (ECM)
2. Symptoms You Will Notice
- Engine cranks but does not start
- Engine stalls or hesitates during acceleration
- Reduced fuel economy
- Check Engine Light illuminated
- Fuel pump noise absent or abnormal
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and note freeze frame data.
Step 2: Inspect fuel pump fuse and relay; test relay operation.
Step 3: Check fuel pump control circuit wiring for opens, shorts, or corrosion.
Step 4: Test fuel pump voltage and ground at the pump connector with a multimeter.
Step 5: If circuit is intact, test fuel pump operation by applying direct battery power and ground.
Step 6: If pump works, suspect ECM or driver module; perform manufacturer-specific tests.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
No, it is not safe. The vehicle may stall unexpectedly or fail to start, posing a safety risk. Have it diagnosed and repaired promptly.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Repair costs vary: a fuel pump replacement can be $400-$800, while a relay or wiring repair may be $100-$300.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.