Injector Circuit - Cylinder 8
The P0283 code means the vehicle's onboard diagnostic system has detected: Injector Circuit - Cylinder 8. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- hard
- Estimated cost
- $150 - $600 (parts and labor)
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Common Symptoms
- Check Engine Light on
- Engine misfire on cylinder 8
- Rough idle and vibration
- Reduced engine performance
Probable Causes (Ranked by Likelihood)
- Faulty fuel injector on cylinder 8 Very High
- Damaged wiring to cylinder 8 injector High
- Poor connection at injector connector Moderate
- PCM driver circuit failure Low
Step-by-Step Diagnostic Procedure
-
Check for misfire code P0308 along with P0283.
-
Measure cylinder 8 injector resistance.
-
Inspect wiring and connector.
-
Swap with adjacent cylinder injector to diagnose.
Frequently Asked Questions
Where is cylinder 8 on a V8?
Cylinder 8 is the last cylinder on a V8 engine. On GM engines it is typically on the passenger side rear. On Ford engines it is on the driver side rear.
Is P0283 more common on high-mileage V8s?
Yes, fuel injectors and wiring degrade over time. High-mileage V8 engines with 100,000+ miles are more prone to injector circuit faults.
Can I drive with P0283?
Short distances only. A persistent misfire will damage the catalytic converter and foul the spark plug.
Sources
This page is built from documented references. Verify against your own service info before repair work.
P0283 on Diesel, EV & Equipment
The same code ID appears across other engines and platforms. The diagnostic flow varies by manufacturer — these are the platform-specific breakdowns:
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