Cylinder 6 Injector Data Incompatible
The P2691 code indicates that the Engine Control Module (ECM) has detected a mismatch between the expected and actual performance data from the fuel injector on cylinder 6. This can be caused by a faulty injector, wiring issues, or a problem with the ECM itself. The injector may be delivering incorrect fuel quantity or timing, leading to poor engine performance.
01. Most Common Causes
- Faulty fuel injector on cylinder 6
- Wiring or connector issues in the injector circuit
- ECM software or hardware malfunction
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine misfire or rough idle
- Reduced fuel economy and power
03. Step-by-Step Diagnosis
Step 1: Use an OBD2 scanner to confirm the code and check for additional codes.
Step 2: Inspect the wiring and connector for cylinder 6 injector for damage or corrosion.
Step 3: Swap the injector with another cylinder to see if the code follows.
Step 4: If the code moves, replace the injector; if not, check the ECM.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as it can cause engine damage and poor performance.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and injector replacement, depending on labor rates.