P0221 Audi Coupe DTC Code

Audi Coupe Engine Specifications:

Engine Type :	Single Cylinder Engine
Cylinder Type :	Opposite Piston Engine
Engine Air Intake Process :	Supercharged Engine

Your Audi Coupe engine control system detects a problem, the computer stores the diagnostic trouble code P0221 in its memory. To figure out what is wrong with your vehicle you must first extract the P0221 DTC For Audi Coupe.

On 1999 and later P0221 Audi Coupe engines, the instrument cluster has a built-in self-diagnostic mode that can be accessed by pressing and holding the instrument cluster SELECT/RESET button. Insert the ignition key and turn to the RUN position (but don't crank or start engine). Continue to press and hold the SELECT/RESET button (for 5 seconds) until the word TEST is displayed by the odometer. Release the SELECT/RESET button within three seconds after the word TEST is displayed to begin the self-diagnostic mode.

P0221 Audi Coupe DTC Meaning

P	Powertrain Code - Problem is related engine, transmission and emissions systems.
0	SAE - Generic
2	Computer And Auxiliary Outputs
2	Cruise Control Servo Indicates Low
1	PCM Stack Overrun

If your vehicle failed a P0221 Audi Coupe test and the P0221 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses P0221 a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look P0221 DTC For Audi Coupe: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.