Diagnostic Trouble Code Search

Find detailed information about vehicle diagnostic trouble codes (DTCs). Enter a code or select a make to search our comprehensive database.

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DTC Code Format Guide
P Powertrain
B Body
C Chassis
U Network

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P Codes

Code Type System System Name Module Message
P1124 P-Code Powertrain Throttle Position Sensor Engine Control Module Throttle Position Sensor Out Of Self Test Range
P1125 P-Code Powertrain Throttle position sensor Engine Control Module Throttle position sensor intermittent
P1126 P-Code Powertrain Throttle Position (Narrow Range) Sensor Circuit Engine Control Module Throttle Position (Narrow Range) Sensor Circuit Malfunction
P1127 P-Code Powertrain Exhaust Not Warm, Downstream O2 Sensor Engine Control Module Exhaust Not Warm, Downstream O2 Sensor
P1128 P-Code Powertrain Upstream Heated O2 Sensors Engine Control Module Upstream Heated O2 Sensors Swapped
P1129 P-Code Powertrain Downstream Heated O2 Sensors Engine Control Module Downstream Heated O2 Sensors Swapped
P1130 P-Code Powertrain Lack Of HO2S Switch – Adaptive Fuel At Limit Engine Control Module Lack Of HO2S Switch – Adaptive Fuel At Limit
P1131 P-Code Powertrain Lack Of HO2S Switch – Sensor Indicates Lean Engine Control Module Lack Of HO2S Switch – Sensor Indicates Lean
P1132 P-Code Powertrain Lack Of HO2S Switch – Sensor Indicates Rich Engine Control Module Lack Of HO2S Switch – Sensor Indicates Rich
P1133 P-Code Powertrain HO2S Insufficient Switching Sensor 1 Engine Control Module HO2S Insufficient Switching Sensor 1
P1134 P-Code Powertrain HO2S Transition Time Ratio Sensor 1 Engine Control Module HO2S Transition Time Ratio Sensor 1
P1135 P-Code Powertrain Pedal Position Sensor A Circuit Engine Control Module Pedal Position Sensor A Circuit Intermittent
P1136 P-Code Powertrain Fan Control Circuit Engine Control Module Fan Control Circuit Malfunction
P1137 P-Code Powertrain Lack Of HO2S Switch – Sensor Indicates Lean Engine Control Module Lack Of HO2S Switch – Sensor Indicates Lean
P1138 P-Code Powertrain Lack Of HO2S12 Switch – Sensor Indicates Rich Engine Control Module Lack Of HO2S12 Switch – Sensor Indicates Rich
P1139 P-Code Powertrain Water In Fuel Indicator Circuit Engine Control Module Water In Fuel Indicator Circuit Malfunction
P1140 P-Code Powertrain Water In Fuel Condition Engine Control Module Water In Fuel Condition
P1141 P-Code Powertrain Fuel Restriction Indicator Circuit Engine Control Module Fuel Restriction Indicator Circuit Malfunction
P1142 P-Code Powertrain Fuel Restriction Condition Engine Control Module Fuel Restriction Condition
P1143 P-Code Powertrain Air Assist Control Valve Engine Control Module Air Assist Control Valve Range/Performance