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 1101-1200 of 4123 total codes

P04XX Engine Control System

P044C
The P044C code signifies a high input from the evaporative emission system's ...
P044D
P044D indicates a problem with the evaporative emissions control system's ven...
P044E
P044E indicates a performance issue in the EVAP vent control circuit.
P044F
P044F indicates a malfunction in the evaporative emission control system,
P0450
The P0450 code indicates a malfunction in the evaporative emission control sy...
P0451
P0451 indicates a malfunction in the evaporative emission control system's pr...
P0452
P0452 indicates a low input from the EVAP pressure sensor.
P0453
Indicates a problem with the evaporative emission control system pressure sen...
P0454
The P0454 code indicates a malfunction in the EVAP system pressure sensor,
P0455
DTC P0455 points to a large leak in the EVAP system, affecting emissions cont...
P0456
P0456 indicates a small leak in the evaporative emissions system.
P0457
P0457 means there's a leak in the evaporative emission control system,
P0458
P0458 indicates a low input from the evaporative emission control system pres...
P0459
The P0459 code signifies an issue with the EVAP pressure sensor's performance.
P045A
P045A indicates a leak or malfunction in the EVAP system, affecting emissions...
P045B
The P045B code signifies a vent control circuit performance issue in the EVAP...
P045C
P045C indicates an issue with the EVAP system's pressure regulation.
P045D
The P045D code signals a leak in the evaporative emission control system.
P045E
P045E indicates a problem with the EVAP system's pressure sensor,
P045F
P045F indicates a leak in the EVAP system, which can affect emissions and fue...
P0460
P0460 indicates a malfunction in the fuel level sensor circuit.
P0461
P0461 indicates a fuel level sensor circuit issue, affecting fuel gauge accur...
P0462
P0462 indicates a low input from the fuel level sensor circuit.
P0463
DTC P0463 indicates a high input from the fuel level sensor circuit.
P0464
P0464 indicates a fuel level sensor issue, affecting fuel gauge accuracy.
P0465
P0465 indicates a problem with the fuel level sensor's range or performance.
P0466
P0466 indicates a problem with the fuel level sensor's range or performance.
P0467
P0467 indicates a fuel level sensor performance issue, affecting fuel gauge a...
P0468
P0468 means the fuel level sensor circuit has a high input voltage,
P0469
P0469 indicates a fuel level sensor performance problem, affecting fuel readi...
P046A
P046A indicates a problem with the fuel level sensor's performance,
P046B
The P046B code indicates an issue with the fuel level sensor's ability to acc...
P046C
The P046C code indicates a performance issue with your vehicle's fuel level s...
P046D
P046D indicates a fuel level sensor issue, affecting fuel gauge accuracy.
P046E
P046E indicates a problem with the fuel level sensor circuit performance.
P046F
P046F indicates a fuel level sensor range/performance issue.
P0470
The P0470 code indicates a fault in the exhaust pressure sensor circuit,
P0471
The P0471 code signifies a malfunction in the exhaust pressure sensor circuit...
P0472
The P0472 code indicates a low voltage signal from the exhaust pressure senso...
P0473
P0473 indicates a problem with the exhaust pressure sensor's performance.
P0474
The P0474 code indicates a problem with the exhaust pressure sensor's range o...
P0475
P0475 means there's an issue with the exhaust pressure sensor circuit,
P0476
P0476 indicates an issue with the exhaust pressure sensor's range or performa...
P0477
DTC P0477 indicates a problem with the exhaust pressure sensor circuit perfor...
P0478
P0478 indicates a malfunction in the exhaust pressure sensor circuit,
P0479
The P0479 code indicates an issue with the exhaust pressure sensor's range or...
P047A
The P047A code indicates an issue with the exhaust pressure sensor's range or...
P047B
P047B indicates a problem with the exhaust pressure sensor's readings.
P047C
P047C indicates a performance issue with the exhaust pressure sensor,
P047D
Indicates an issue with the diesel exhaust pressure sensor in your vehicle.
P047E
The P047E code indicates a performance issue with the exhaust pressure sensor...
P047F
DTC P047F indicates a problem with the exhaust pressure sensor's performance ...
P0480
P0480 indicates a malfunction in the cooling fan control circuit,
P0481
Indicates an issue with the cooling fan control circuit.
P0482
DTC P0482 indicates a malfunction in the cooling fan control circuit,
P0483
DTC P0483 indicates a malfunction in the cooling fan system.
P0484
P0484 refers to a cooling fan control circuit issue, indicating the fan's per...
P0485
P0485 indicates a malfunction in the cooling fan control circuit.
P0486
Indicates a problem with the Exhaust Gas Recirculation (EGR) sensor range or ...
P0487
DTC P0487 indicates a low signal from the cooling fan control circuit,
P0488
DTC P0488 indicates a malfunction in the variable speed cooling fan control c...
P0489
P0489 indicates a problem with the EGR sensor's performance.
P048A
P048A indicates a problem with the coolant flow or temperature regulation in ...
P048B
The P048B code signals a malfunction in the engine coolant temperature sensor...
P048C
P048C signals a problem with the engine cooling system, often related to the ...
P048D
P048D indicates a malfunction in the second cooling fan's performance.
P048E
The P048E code indicates a cooling system performance issue, often related to...
P048F
P048F indicates an issue with engine coolant flow, often due to a faulty ther...
P0490
P0490 indicates a malfunction in the secondary air injection system.
P0491
P0491 indicates insufficient flow in the secondary air injection system.
P0492
P0492 indicates insufficient flow from the secondary air injection system,
P0493
P0493 indicates high purge flow in the EVAP system, potentially leading to in...
P0494
P0494 indicates insufficient EGR flow in the Exhaust Gas Recirculation system.
P0495
The P0495 code indicates a high flow condition in the evaporative emission sy...
P0496
P0496 indicates high purge flow in the evaporative emission system.
P0497
DTC P0497 indicates low purge flow in the EVAP system.
P0498
DTC P0498 signifies a high voltage reading at the evaporative emission contro...
P0499
P0499 indicates an issue with the evaporative emission control system's purge...
P049A
P049A indicates a fault in the secondary air injection system,
P049B
Indicates a problem within the evaporative emissions system, specifically rel...
P049C
P049C signifies an issue with the EGR position sensor performance,
P049D
P049D indicates a problem with the EGR control circuit's performance.
P049E
P049E means there's a high purge flow detected in the evaporative emission sy...
P049F
P049F indicates a high flow condition in the evaporative emission system,
P04A0
P04A0 indicates a malfunction in the oil separator system performance.
P04A1
DTC P04A1 indicates a malfunction in the crankcase ventilation system,
P04A2
P04A2 indicates excessive crankcase pressure in the PCV system.
P04A3
P04A3 indicates a malfunction in the crankcase ventilation system.
P04A4
DTC P04A4 indicates excessive crankcase pressure related to the Positive Cran...
P04A5
P04A5 indicates an oil separator malfunction in the crankcase ventilation sys...
P04A6
DTC P04A6 indicates a malfunction in the oil separator system,
P04A7
P04A7 indicates a problem with the positive crankcase ventilation system pres...
P04A8
DTC P04A8 indicates a problem with the crankcase ventilation system,
P04A9
P04A9 indicates a performance issue with the oil separator in the crankcase v...
P04AA
Indicates a problem with the Positive Crankcase Ventilation (PCV) system,
P04AB
P04AB indicates a malfunction in the positive crankcase ventilation system re...
P04AC
P04AC indicates a problem with the oil separator system in your vehicle's cra...
P04AD
Indicates a malfunction in the Positive Crankcase Ventilation (PCV) system,
P04AE
P04AE indicates abnormal crankcase pressure, often leading to oil leaks.
P04AF
P04AF indicates an issue with the crankcase ventilation system,
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