P0291
Powertrain Codes
P0291 - AUDI - Cylinder 11 Injector Circuit Low
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine Misfire
- Engine Run Rough
- Low MPG
Possible Causes
- Fuel injector 11 harness is open or shorted
- Fuel injector 11 Circuit poor electrical connection
- Plugged Fuel Injector 11
- Dirty Fuel Injector 11
- Faulty Fuel Injector 11
Tech Notes
Clogged or partially clogged fuel injector can cause this code. Start by performing an injector flush before replacing the injector.
Description
Code P0291 is triggered when the Engine Control Module (ECM) detects a low voltage in the Fuel Injector 11 Circuit. During normal conditions the ECM turns the Fuel Injectors ON and OFF in the Fuel Injection System.