Injector Circuit / Open - Cylinder 11
What does P0211 mean?
The P0211 code means the vehicle's onboard diagnostic system has detected: Injector Circuit / Open - Cylinder 11. This is a critical severity code.
Common Symptoms
- Check Engine Light on or flashing
- Cylinder 11 misfire with rough engine operation
- Noticeable power loss
- Engine vibration
- Unburned fuel entering exhaust system
Probable Causes (Ranked by Likelihood)
- Failed fuel injector on cylinder 11 Very High
- Open wiring in the injector circuit High
- Corroded or loose connector Moderate
- PCM injector driver failure Low
- High resistance in injector coil winding Low
Step-by-Step Diagnostic Procedure
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Confirm cylinder 11 misfire with a scan tool.
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Measure injector resistance on cylinder 11 (11-17 ohms typical).
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Check for pulse at the injector connector using a noid light.
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Inspect wiring and connector for damage, breaks, or corrosion.
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Swap the injector with another cylinder to confirm the fault.
Frequently Asked Questions
Can I drive with code P0211?
No. A dead cylinder 11 injector causes unburned fuel to enter the exhaust, risking catalytic converter damage. Have the vehicle serviced immediately.
What vehicles have a cylinder 11?
Cylinder 11 is found only on V12 engines, which are used in high-end luxury and performance vehicles such as Mercedes-Benz S600, BMW 760, Ferrari, and Aston Martin models.
Are V12 injector repairs expensive?
Yes. V12 injectors are typically more expensive ($100-$300 each), and labor costs are higher due to the complexity of the engine layout. Total repair costs for a single injector can range from $200 to $600.