Injector Circuit High - Cylinder 9
The P0288 code means the vehicle's onboard diagnostic system has detected: Injector Circuit High - Cylinder 9. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $150 - $700 (parts and labor)
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Common Symptoms
- Check Engine Light on
- No fuel delivery to cylinder 9
- Misfire and rough running
- Reduced power
Probable Causes (Ranked by Likelihood)
- Open circuit in cylinder 9 injector wiring Very High
- Failed injector (open coil) High
- Disconnected connector Moderate
- PCM driver open Low
Step-by-Step Diagnostic Procedure
-
Measure injector resistance.
-
Check connector.
-
Test wiring continuity.
-
Replace injector if wiring is good.
Frequently Asked Questions
Can a V10 run on 9 cylinders?
Technically yes, but with a noticeable misfire, vibration, and reduced power. The catalytic converter on the affected bank can be damaged.
Are V10 injector connectors the same as V8?
Not always. Some V10 engines use the same connector style as V8 versions, but others use unique connectors.
How long do V10 injectors last?
V10 injectors typically last 80,000-150,000 miles depending on fuel quality and maintenance.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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