Injection Pump Timing Offset
The P2672 code indicates that the Engine Control Module (ECM) has detected an injection pump timing offset outside the expected range. This means the actual fuel injection timing does not match the commanded timing, often due to mechanical wear, sensor issues, or calibration problems. The ECM monitors the crankshaft and camshaft position sensors to verify injection timing; a discrepancy triggers this code.
1. Most Common Causes
- Faulty injection pump timing actuator
- Worn or stretched timing belt/chain
- Defective crankshaft or camshaft position sensor
- ECM software or calibration error
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine misfire or rough idle
- Reduced fuel economy and power
- Hard starting or no start
3. Step-by-Step Diagnosis
Step 1: Scan for additional codes and freeze frame data.
Step 2: Inspect timing belt/chain condition and tension.
Step 3: Test injection pump timing actuator and wiring.
Step 4: Check crankshaft and camshaft sensor signals with oscilloscope.
Step 5: Perform injection pump timing calibration per manufacturer procedure.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with incorrect injection timing can cause engine damage, poor performance, and increased emissions. Have it diagnosed promptly.
How much does it cost to fix?▼
Diagnosis typically costs $50-$150. Repairs vary: timing belt replacement $300-$800, injection pump actuator $200-$600, sensor replacement $100-$300.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.