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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P1231 High Speed Fuel Pump Relay Activated
Hyundai Injector Circuit High severity
P1236 Fuel Pump Control Out of Range
Hyundai Injector Circuit High severity
P1239 Speed Fuel Pump Positive Feed Fault
Hyundai Injector Circuit High severity
P1243 Second Fuel Pump Faulty or Ground Fault
Hyundai Injector Circuit High severity
P1244 Alternator Load Input Failed High
Hyundai Vehicle Speed and Idle Control System High severity
P1248 Turbo Boost Pressure Not Detected
Hyundai Injector Circuit High severity
P1252 Pedal Correlation PDS1 and LPDS High
Hyundai Vehicle Speed and Idle Control System Low severity
P1255 Pedal Correlation PDS2 and LPDS Low
Hyundai Vehicle Speed and Idle Control System Low severity
P1261 Cylinder 1 High To Low Side Short
Hyundai Injector Circuit High severity
P1265 Cylinder 5 High To Low Side Short
Hyundai Injector Circuit High severity
P1269 Injector 4 Implausible Signal
Hyundai Injector Circuit High severity
P1272 Cylinder 2 High To Low Side Open
Hyundai Injector Circuit High severity
P1277 Cylinder 7 High To Low Side Open
Hyundai Injector Circuit High severity
P1280 Injection Control Pressure Out Of Range Low
Hyundai Ignition System High severity
P1285 Cylinder Head Over Temperature Condition
Hyundai Injector Circuit High severity

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