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
P1084
Exhaust Bank 3- Mixture Adaption Range 2 Lower Rich Limit Not Reached
Volkswagen
Auxiliary Emissions Control
High severity
P1085
Exhaust Bank 4- Mixture Adaption Range 1 Lower Lean Limit Not Reached
Volkswagen
Auxiliary Emissions Control
High severity
P1087
Exhaust Bank 4- Mixture Adaption Range 1 Lower Rich Limit Not Reached
Volkswagen
Auxiliary Emissions Control
High severity
P1088
Exhaust Bank 4- Mixture Adaption Range 2 Lower Rich Limit Not Reached
Volkswagen
Auxiliary Emissions Control
High severity
P1094
O2 Sensor Circuit Slow Response in Rich Control Range Bank 2 Sensor 1
Volkswagen
Fuel and Air Metering
Medium severity
P1096
O2 Sensor Circuit Slow Switching From Lean to Rich Bank 2 Sensor 1
Volkswagen
Fuel and Air Metering
Medium severity
P1098
O2 Sensor Circuit Slow Response after Coast Down Fuel Cutoff Bank 2 Sensor 2
Volkswagen
Fuel and Air Metering
Medium severity
P1101
HO2S11 Sensor Circuit Voltage Too Low Air Leak
Volkswagen
Fuel and Air Metering
Medium severity
P1103
HO2S Heating Circuit Bank 1 Sensor 1 Voltage Too Low
Volkswagen
Fuel and Air Metering
Medium severity
P1107
HO2S Heating Circuit Bank 2 Sensor 1 Short To Positive
Volkswagen
Fuel and Air Metering
Medium severity
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