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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P2548 Torque Management Request Input Signal B
Transmission System High severity
P2551 Torque Management Request Input Signal B High
Transmission System High severity
P2552 Throttle/Fuel Inhibit Circuit
Fuel and Air Metering High severity
P2554 Throttle/Fuel Inhibit Circuit Low
Fuel and Air Metering High severity
P2556 Engine Coolant Level Sensor/Switch Circuit
Fuel and Air Metering High severity
P2558 Engine Coolant Level Sensor/Switch Circuit Low
Fuel and Air Metering High severity
P2559 Engine Coolant Level Sensor/Switch Circuit High
Fuel and Air Metering High severity
P2560 Engine Coolant Level Low
Fuel and Air Metering High severity
P2561 A/C Ctrl Mod Requested MIL Illumination
Computer Output Circuit High severity
P2564 Turbocharger Boost Ctrl Position Sensor Circuit Low
Injector Circuit High severity
P2566 Turbocharger Boost Ctrl Position Sensor Circuit Interim
Injector Circuit High severity
P2569 Direct Ozone Reduction Catalyst Temp Sensor Circuit Low
Auxiliary Emissions Control Medium severity
P2570 Direct Ozone Reduction Catalyst Temp Sensor Circuit High
Auxiliary Emissions Control Medium severity

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