Cylinder 3 Injector Circuit Low
What does P0267 mean?
The P0267 code means the vehicle's onboard diagnostic system has detected: Cylinder 3 Injector Circuit Low. This is a moderate severity code.
Common Symptoms
- Engine misfire on cylinder 3
- Rough idle
- Check Engine Light illuminated
- Reduced power
- Fuel smell from exhaust
Probable Causes (Ranked by Likelihood)
- Short to ground in cylinder 3 injector wiring Very High
- Faulty cylinder 3 fuel injector (shorted coil) High
- Corroded injector connector pins High
- Damaged wiring harness near cylinder 3 Moderate
- PCM injector driver circuit failure Low
Step-by-Step Diagnostic Procedure
-
Measure cylinder 3 injector resistance -- should be 11-18 ohms; below spec indicates a shorted coil
-
Check for short to ground between the injector signal wire and engine ground with injector disconnected
-
Swap cylinder 3 injector with another cylinder and clear codes -- if the code follows, the injector is faulty
-
Inspect the injector wiring for damage from heat exposure near the exhaust manifold
-
Test the PCM driver signal at cylinder 3 connector with a noid light
Frequently Asked Questions
Can I drive with code P0267?
You can drive short distances. The engine will misfire on cylinder 3, causing rough running. Unburned fuel entering the exhaust can damage the catalytic converter over time.
Is cylinder 3 harder to access on V6 engines?
On many V6 engines, cylinder 3 is on the rear bank near the firewall, making it more difficult to access. This can increase labor costs for injector replacement.
Can I clean a shorted injector?
No. If the injector coil is electrically shorted, cleaning will not fix it. The injector must be replaced. Cleaning only helps with clogged injectors that have normal electrical readings.