OBD fault code library
Look up any P or U code to see what it means, what causes it, the parts involved and how it gets fixed.
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Fault codes
P1155
Manifold Absolute Pressure Sensor Short To Positive
Volkswagen
Fuel and Air Metering
High severity
P1158
Manifold Absolute Pressure Sensor Implausible Signal
Volkswagen
Fuel and Air Metering
High severity
P1166
Bank 1 Long Term Fuel Trim Range 2 Rich Upper Limits Exceeded
Volkswagen
Fuel and Air Metering
High severity
P1172
Throttle Actuation Potentiometer Signal 2 Signal Too Low
Volkswagen
Fuel and Air Metering
High severity
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