Cylinder 3 Injector Circuit Low
The P0267 code indicates that the Engine Control Module (ECM) has detected a low voltage or current condition in the electrical circuit for the fuel injector on cylinder 3. This typically means the injector's resistance is too low (shorted internally) or there is a short to ground in the wiring or connector. The ECM monitors the injector circuit for proper voltage drop when the injector is activated; a low reading triggers this code.
1. Most Common Causes
- Faulty fuel injector on cylinder 3 (internal short)
- Shorted or damaged wiring/connector to injector 3
- Corroded or loose connector at injector 3
- ECM internal fault (rare)
2. Symptoms You Will Notice
- Check Engine Light illuminated
- Engine misfire on cylinder 3
- Rough idle or hesitation
- Decreased fuel economy
- Possible engine stalling
3. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect injector 3 connector and wiring for damage, corrosion, or shorts.
Step 3: Measure resistance of injector 3 (should be 11-18 ohms; low indicates short).
Step 4: Check for voltage at injector 3 connector with key on (should be battery voltage).
Step 5: Perform a injector balance test or use a noid light to confirm injector pulse.
Step 6: If wiring and connector are good, replace injector 3.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the misfire can damage the catalytic converter and cause poor performance. Short trips to a repair shop are acceptable.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and replacement of the injector if needed, but can be higher depending on labor rates and vehicle model.
5. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.