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
P1132
HO2S Heater Circuit Bank 1/2 Sensor 1 Short To B
Volkswagen
Fuel and Air Metering
Medium severity
P1134
HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Short To B
Volkswagen
Fuel and Air Metering
Medium severity
P1135
HO2S Heater Circuit- Bank 1 & 2 Sensor 2 Electrical Malfunction
Volkswagen
Fuel and Air Metering
Medium severity
P1138
Long Term Fuel Trim Add Fuel B2 System Too Lean
Volkswagen
Fuel and Air Metering
High severity
P1139
Long Term Fuel Trim Add Fuel B2 System Too Rich
Volkswagen
Fuel and Air Metering
High severity
P1151
Bank 1 Long Term Fuel Trim Range 1 Lean Lower Limit Exceeded
Volkswagen
Fuel and Air Metering
High severity
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