What does P0208 mean?
The engine computer detected an open or electrical fault in the fuel injector circuit for cylinder 8.
Quick Decision Guide
- Failed fuel injector on cylinder 8
- Loose or corroded injector connector
- Open or shorted injector wiring
When to stop driving
If the check-engine light is flashing or the engine is shaking badly, stop driving. A dead injector circuit can create a severe misfire and overheat the catalytic converter.
Reviewed by ratchit Automotive Solutions for clarity and inspection-first safety framing. Not a substitute for professional diagnosis.
Repair Decision & Cost Guide
Use this guide to decide what to inspect first, what it may cost, and when to move from DIY checks to professional diagnosis.
P0208 is a clue, not a confirmed diagnosis. Inspect simple causes before replacing parts.
DIY vs. Shop
Can you keep driving?
Best first DIY check
Don't replace this first
When to seek a shop
Recommended next action
Estimated Repair Cost
Inspection cost
Free OBD2 read at most parts stores
DIY parts cost
$0–$180
Inspect first before replacing parts.
If the vehicle is unsafe to drive, stop driving and seek professional help.
Shop diagnostic cost
$80–$150 (typical shop diagnostic fee)
Shop repair cost
$100–$700
Diagnostic uncertainty: This code points to a system or condition, not a guaranteed failed part. Inspect before replacing.
Cost variation: Costs vary by vehicle, location, part quality, labor rate, and the confirmed root cause.
Inspect Before Replacing
These checks are cheap, fast, and rule out the most common causes before spending money on parts.
- 1Inspect the cylinder 8 injector connector for looseness, corrosion, broken lock tabs, or oil intrusion.
- 2Scan for companion misfire codes and freeze-frame data to see when the fault occurs.
Save this issue to My Garage
Save this issue to My Garage, track what you inspect, and build service history for this vehicle.
V-IQ readiness preview: High impact — resolving and tracking this issue may noticeably improve your V-IQ readiness. Tracking active codes and resolutions builds a service history we use to estimate V-IQ readiness over time.
Understanding P0208 in detail
P0208 means the control module expected to see normal current flow through the cylinder 8 fuel injector circuit but detected an open circuit, short, or abnormal electrical response. This can be caused by a failed injector coil, damaged wiring, a loose connector, corrosion at the injector plug, or a driver issue in the control module. Because the affected cylinder may receive little or no fuel, the engine can misfire, run rough, lose power, and send unburned oxygen through the exhaust. Diagnose the circuit before replacing the injector — many injector-circuit codes are wiring or connector problems rather than a failed injector itself.
Symptoms of P0208
- Check engine light on or flashing
- Rough idle or engine shaking
- Cylinder-specific misfire symptoms
- Loss of power during acceleration
- Poor fuel economy
- Fuel smell or raw exhaust smell in some cases
Common causes
- Failed fuel injector on cylinder 8
- Loose or corroded injector connector
- Open or shorted injector wiring
- Damaged engine harness near the injector rail
- Faulty ECM/PCM injector driver (less common)
How to diagnose P0208
Steps ordered by urgency — tackle Now items first.
- NowInspect the cylinder 8 injector connector for looseness, corrosion, broken lock tabs, or oil intrusion.
- NowScan for companion misfire codes and freeze-frame data to see when the fault occurs.
- SoonCheck injector resistance and compare it with the other cylinders.
- SoonUse a noid light or scope to verify injector pulse at the connector.
- LaterRepair wiring or replace the injector only after confirming the failed side of the circuit.
How to fix P0208
Fixes listed in order of likelihood and cost-efficiency.
- 1Reseat or repair injector connector
- 2Repair open or shorted injector wiring
- 3Replace failed fuel injector
- 4Repair engine harness damage
- 5Diagnose ECM/PCM injector driver if wiring and injector test good
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Estimated Repair Cost — P0208
Ranges vary by vehicle, region, and shop. Use as a ballpark — always get a quote.
DIY estimate
$10 – $60
Shop estimate
$100 – $350
DIY estimate
$50 – $180
Shop estimate
$250 – $700
DIY estimate
$0 – $40
Shop estimate
$120 – $300
Cost data is estimated and may not reflect your specific vehicle or location.
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Frequently Asked Questions
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