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
P1525 P-Code Powertrain AirBypassValveSystem Engine Control Module AirBypassValveSystem
P1526 P-Code Powertrain AirBypassSystem Engine Control Module AirBypassSystem
P1527 P-Code Powertrain AccelerateWarmupSolenoidCircuitMalfunction Engine Control Module AccelerateWarmupSolenoidCircuitMalfunction
P1528 P-Code Powertrain SubsidiaryThrottleValveSolenoidCircuitMalfunction Engine Control Module SubsidiaryThrottleValveSolenoidCircuitMalfunction
P1529 P-Code Powertrain SCAIRSolenoidCircuitMalfunction Engine Control Module SCAIRSolenoidCircuitMalfunction
P1530 P-Code Powertrain A/CClutchCircuitMalfunction Engine Control Module A/CClutchCircuitMalfunction
P1531 P-Code Powertrain InvalidTest-AcceleratorPedalMovement Engine Control Module InvalidTest-AcceleratorPedalMovement
P1532 P-Code Powertrain IMCCCircuitMalfunction,BankB Engine Control Module IMCCCircuitMalfunction,BankB
P1533 P-Code Powertrain AAICircuitMalfunction Engine Control Module AAICircuitMalfunction
P1534 P-Code Powertrain InertiaSwitchActivated Engine Control Module InertiaSwitchActivated
P1535 P-Code Powertrain BlowerFanSpeedCircuitRange/Performance Engine Control Module BlowerFanSpeedCircuitRange/Performance
P1536 P-Code Powertrain ParkingBrakeSwitchCircuitFailure Engine Control Module ParkingBrakeSwitchCircuitFailure
P1537 P-Code Powertrain IntakeManifoldRunnerControl (Bank1)StuckOpen Engine Control Module IntakeManifoldRunnerControl (Bank1)StuckOpen
P1538 P-Code Powertrain IntakeManifoldRunnerControl (Bank2)StuckOpen Engine Control Module IntakeManifoldRunnerControl (Bank2)StuckOpen
P1539 P-Code Powertrain PowerToA/CClutchCircuitOvercurrent Engine Control Module PowerToA/CClutchCircuitOvercurrent
P1540 P-Code Powertrain AirBypassValveCircuitMalfunction Engine Control Module AirBypassValveCircuitMalfunction
P1549 P-Code Powertrain IMCCCircuitMalfunction,BankB Engine Control Module IMCCCircuitMalfunction,BankB
P1550 P-Code Powertrain PSPSOutOfSelfTestRange Engine Control Module PSPSOutOfSelfTestRange
P1565 P-Code Powertrain SpeedControlCommandSwitchOutofRangeHigh Engine Control Module SpeedControlCommandSwitchOutofRangeHigh
P1566 P-Code Powertrain SpeedControlCommandSwitchOutofRangeLow Engine Control Module SpeedControlCommandSwitchOutofRangeLow