Engine Diagnostic Codes (P0XXX)

Complete list of engine diagnostic trouble codes (P0XXX). Browse powertrain codes for engine, transmission, and emission control systems.

Popular Engine Codes

P0100

Mass Air Flow Circuit

Mass or Volume Air Flow Circuit malfunction

P0171

System Too Lean (Bank 1)

System too Lean (Bank 1)

P0300

Random/Multiple Cylinder Misfire

Random/Multiple Cylinder Misfire Detected

P0420

Catalyst System Efficiency

Catalyst System Efficiency Below Threshold (Bank 1)

P0442

EVAP System Leak

Evaporative Emission Control System Leak Detected (small leak)

Complete Engine Codes Index

Browse all available engine diagnostic trouble codes (P0XXX) organized by system:

Showing codes 601-700 of 4123 total codes

P02XX Engine Control System

P0258
Indicates the engine's fuel pump may not be functioning correctly,
P0259
P0259 indicates a high voltage condition in the fuel pump control circuit.
P025A
P025A indicates a fuel pressure regulator performance issue, affecting fuel d...
P025B
DTC P025B indicates a problem with the fuel pump control circuit.
P025C
P025C indicates a performance issue with the fuel pump control module.
P025D
P025D indicates a fuel pressure regulator performance issue, affecting fuel d...
P025E
DTC P025E indicates a performance issue with the fuel injector control module.
P025F
The P025F code signifies a diesel fuel injection system performance issue,
P0260
DTC P0260 signifies a malfunction in the fuel injector circuit for cylinder 1...
P0261
P0261 indicates an issue with the injector circuit for cylinder one.
P0262
P0262 refers to a low voltage condition in the fuel injector circuit for cyli...
P0263
Indicates the ECM is not receiving the expected voltage or signal from the fu...
P0264
P0264 indicates a problem with the fuel injector circuit performance.
P0265
P0265 indicates a problem with the fuel injector circuit for cylinder one.
P0266
P0266 signals a problem with the fuel injector circuit's performance,
P0267
DTC P0267 indicates low voltage in the fuel injector circuit for cylinder 3.
P0268
P0268 indicates a high voltage in the fuel injector circuit for cylinder 2.
P0269
P0269 indicates a problem with the fuel injector circuit performance,
P026A
DTC P026A indicates a performance issue with the fuel injector circuit for cy...
P026B
P026B refers to a fuel injector circuit issue for cylinder 1, indicating pote...
P026C
P026C indicates a problem with the fuel injector control module performance f...
P026D
P026D indicates a fuel injector circuit performance issue.
P026E
The P026E code indicates a performance problem with the fuel injector circuit...
P026F
P026F indicates a fuel pump module control circuit issue affecting fuel deliv...
P0270
P0270 indicates a problem with the fuel injector circuit for cylinder 6.
P0271
P0271 indicates a problem with the fuel injector circuit for cylinder 4.
P0272
P0272 indicates a problem with the fuel injector circuit performance.
P0273
DTC P0273 indicates an open circuit in the fuel injector for cylinder 5.
P0274
P0274 indicates a fuel injector problem in cylinder 6.
P0275
P0275 indicates a low circuit condition in the fuel injector of cylinder 'D'.
P0276
P0276 indicates a fuel injector balance issue in cylinder 6, affecting engine...
P0277
P0277 indicates a low voltage issue in the injector circuit for cylinder 6,
P0278
P0278 indicates a performance problem with the cylinder balance sensor for cy...
P0279
P0279 indicates a low voltage issue in the fuel injector circuit for cylinder 5.
P027A
P027A indicates a fuel injector circuit issue, specifically for cylinder 4.
P027B
DTC P027B indicates a fuel injector circuit performance issue for cylinder 6.
P027C
P027C indicates a low signal from the fuel injector circuit for cylinder 6.
P027D
P027D indicates a fuel injector circuit performance issue.
P027E
P027E indicates a fuel injector circuit range/performance issue detected by t...
P027F
DTC P027F refers to a malfunctioning fuel injector in cylinder 5.
P0280
P0280 indicates a performance issue with cylinder 8 in your engine.
P0281
P0281 indicates a contribution or balance fault in cylinder 7.
P0282
P0282 indicates an imbalance in fuel injector group 'B', potentially leading ...
P0283
P0283 indicates that cylinder 7 is not contributing properly to engine perfor...
P0284
P0284 indicates a problem with the performance of cylinder 4 in the engine.
P0285
DTC P0285 signals a problem with the balance or contribution from cylinder 5.
P0286
Indicates a cylinder contribution or balance fault specifically for cylinder 6.
P0287
P0287 indicates a cylinder 7 contribution or balance fault, signaling that th...
P0288
DTC P0288 indicates a performance issue with the fuel injector circuit for cy...
P0289
The P0289 code indicates a fault in cylinder 6's contribution to engine perfo...
P028A
The P028A diagnostic trouble code (DTC) indicates a problem with the fuel rai...
P028B
P028B indicates a fuel injection problem in a specific cylinder.
P028C
P028C indicates an imbalance in the contribution from cylinder 5,
P028D
DTC P028D refers to an issue with the fuel injector signal circuit for cylind...
P028E
P028E indicates a problem with the fuel injector performance for cylinder 1.
P028F
P028F indicates a fuel rail pressure sensor performance issue,
P0290
P0290 indicates that the turbocharger is not producing enough boost pressure.
P0291
DTC P0291 means there's a problem with the turbocharger or supercharger boost...
P0292
P0292 means the turbocharger is not providing the expected boost pressure,
P0293
P0293 indicates a turbo or supercharger underboost condition.
P0294
P0294 indicates a turbocharger under-boost condition, meaning your turbo isn'...
P0295
P0295 indicates a turbocharger overboost issue, where the boost pressure exce...
P0296
P0296 indicates a turbocharger underboost issue, meaning the turbo isn't prov...
P0297
P0297 relates to insufficient boost pressure from the turbocharger or superch...
P0298
P0298 signifies low turbocharger boost pressure.
P0299
P0299 indicates a turbocharger underboost condition, where the turbo isn't pr...
P029A
P029A indicates a turbocharger or supercharger is not providing enough boost ...
P029B
Indicates the powertrain control module (PCM) has detected a turbocharger or ...
P029C
P029C indicates a turbocharger underboost condition, which can lead to poor e...
P029D
P029D indicates a turbocharger or supercharger underboost condition where the...
P029E
The P029E code signifies a turbocharger or supercharger underboost condition,...
P029F
P029F indicates a turbocharger or supercharger underboost condition,
P02A0
P02A0 indicates a rich fuel condition detected by the ECM.
P02A1
P02A1 indicates a fuel volume regulator issue affecting engine performance.
P02A2
DTC P02A2 indicates a fuel system performance issue.
P02A3
The P02A3 code indicates a problem with the fuel delivery system,
P02A4
DTC P02A4 means the engine is running too rich, indicating an excess of fuel ...
P02A5
Indicates the engine control module (ECM) has detected that the fuel trim sys...
P02A6
DTC P02A6 indicates a fuel injector control performance issue in the engine.
P02A7
P02A7 means the fuel trim is too rich on bank 1, indicating excessive fuel in...
P02A8
P02A8 indicates a fuel injector performance issue.
P02A9
DTC P02A9 signifies an issue with the fuel injector flow rate detected by the...
P02AA
P02AA signifies a fuel injection performance problem, often leading to poor e...
P02AB
P02AB indicates a fault in the fuel pressure regulator performance.
P02AC
P02AC indicates an air-fuel mixture problem in the engine.
P02AD
The P02AD code indicates a fuel delivery issue affecting the engine's perform...
P02AE
P02AE indicates a performance issue with the fuel pressure regulator.
P02AF
P02AF indicates a fuel air metering issue in the engine control system.
P02B0
P02B0 indicates a fuel injection system performance issue.
P02B1
DTC P02B1 signifies a fuel injector performance issue, often leading to poor ...
P02B2
The P02B2 code indicates a problem with fuel injector performance.
P02B3
DTC P02B3 means there's a low voltage issue in the fuel injector circuit.
P02B4
P02B4 indicates an issue with the fuel injection system performance on bank 1.
P02B5
P02B5 indicates a fuel trim imbalance in the engine's fuel system.
P02B6
DTC P02B6 is a trouble code indicating a performance issue with the fuel inje...
P02B7
DTC P02B7 indicates an issue with the intake air temperature sensor circuit.
P02B8
The P02B8 code indicates a fuel injector circuit performance issue,
P02B9
The P02B9 code indicates a problem with the fuel trim system, which impacts e...
P02BA
P02BA indicates a fuel delivery issue related to the fuel trim in your vehicl...
P02BB
P02BB indicates a fuel metering control range problem, affecting engine perfo...
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