Injector Circuit Low - Cylinder 12
The P0296 code means the vehicle's onboard diagnostic system has detected: Injector Circuit Low - Cylinder 12. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $200 - $800 (parts and labor)
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Common Symptoms
- Check Engine Light illuminated
- Cylinder 12 misfire
- Rough idle on V12
- Over-fueling on that cylinder
Probable Causes (Ranked by Likelihood)
- Short to ground in cylinder 12 wiring Very High
- Internally shorted injector High
- Corroded connector Moderate
- PCM driver fault Low
Step-by-Step Diagnostic Procedure
-
Measure injector resistance.
-
Check for short to ground.
-
Inspect connector.
-
Compare to other injectors.
Frequently Asked Questions
What causes circuit low on V12 injectors?
The same causes as any other injector: wiring shorts, corroded connectors, or internal injector coil shorts.
Are W12 engines the same as V12 for diagnosis?
The diagnostic approach is identical. W12 engines (like Bentley/VW) are essentially two narrow-angle V6 banks and use standard OBD-II codes.
How long do V12 injectors last?
V12 injectors typically last 80,000-120,000 miles with proper 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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