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 10701-10800 of 12293 total codes

P29XX Engine Control System

P29CC
The P29CC code indicates a turbocharger performance issue, likely affecting e...
P29CD
P29CD signifies a turbocharger boost control position sensor issue.
P29CE
P29CE indicates a problem with the boost pressure control system,
P29CF
P29CF indicates a turbocharger overboost condition, meaning too much boost pr...
P29D0
P29D0 indicates a turbocharger/supercharger boost control issue.
P29D1
P29D1 indicates a turbocharger underboost condition.
P29D2
P29D2 indicates a turbocharger or supercharger performance issue.
P29D3
DTC P29D3 indicates a problem with the exhaust gas temperature sensor's perfo...
P29D4
DTC P29D4 indicates a turbocharger boost control issue, often leading to redu...
P29D5
P29D5 refers to a problem with the turbocharger boost control position sensor...
P29D6
P29D6 indicates a performance issue with the turbocharger boost control system.
P29D7
P29D7 indicates a turbocharger bypass valve performance issue.
P29D8
DTC P29D8 indicates a boost pressure control malfunction.
P29D9
P29D9 indicates a malfunction in the turbocharger boost control position sens...
P29DA
DTC P29DA indicates a performance issue with the turbocharger or supercharger...
P29DB
P29DB indicates a problem with the turbocharger or supercharger boost pressur...
P29DC
The P29DC code means there's a problem with the turbocharger or supercharger ...
P29DD
P29DD indicates a problem with the turbocharger inlet pressure sensor in cert...
P29DE
P29DE indicates a problem with the turbocharger's performance,
P29DF
The P29DF code indicates a malfunction in the turbocharger actuator system,
P29E0
DTC P29E0 indicates a malfunction in the turbocharger boost control system.
P29E1
P29E1 indicates a boost pressure control malfunction in turbocharged engines.
P29E2
DTC P29E2 indicates an issue with the boost control system, affecting engine ...
P29E3
P29E3 indicates an issue with the turbocharger bypass valve position sensor.
P29E4
The P29E4 code signals a turbocharger boost control position sensor performan...
P29E5
DTC P29E5 relates to the turbocharger boost pressure not meeting expected lev...
P29E6
P29E6 indicates a turbocharger boost control performance issue.
P29E7
The P29E7 code signifies a fuel pressure regulator performance problem.
P29E8
DTC P29E8 signals a problem with the turbocharger or supercharger performance.
P29E9
P29E9 refers to a turbocharger boost control position sensor issue,
P29EA
P29EA indicates a turbocharger wastegate control performance issue.
P29EB
P29EB indicates a problem with the turbocharger boost control system.
P29EC
P29EC indicates a turbocharger boost control issue, affecting engine performa...
P29ED
P29ED indicates a turbocharger boost pressure control issue.
P29EE
The P29EE code signifies a malfunction in the turbocharger boost control syst...
P29EF
DTC P29EF indicates a turbocharger boost control system performance issue.
P29F0
P29F0 indicates a turbocharger underboost condition, affecting engine perform...
P29F1
The P29F1 code indicates a turbocharger overboost condition, which can impact...
P29F2
DTC P29F2 indicates a turbocharger/supercharger boost pressure sensor perform...
P29F3
The P29F3 code relates to a malfunction in the turbocharger boost control pos...
P29F4
DTC P29F4 indicates a turbocharger boost pressure issue, typically related to...
P29F5
DTC P29F5 indicates a malfunction in the turbocharger boost control system,
P29F6
DTC P29F6 indicates an issue with the turbocharger boost control system.
P29F7
P29F7 indicates a turbocharger boost control issue in Ford vehicles.
P29F8
P29F8 signifies a performance issue with the turbocharger wastegate position ...
P29F9
The P29F9 code indicates a fuel pressure regulation issue in your vehicle.
P29FA
The P29FA code indicates a problem with turbocharger boost pressure.
P29FB
The P29FB code indicates a boost control problem with your turbocharger or su...
P29FC
P29FC indicates a problem with the turbocharger boost control performance.
P29FD
P29FD indicates a boost control performance problem with the turbocharger or ...
P29FE
The P29FE code refers to a fault in the turbocharger boost control system.
P29FF
P29FF indicates an overboost condition in the turbocharger system.

P2AXX Engine Control System

P2A00
The P2A00 code signals a problem with the oxygen sensor’s performance.
P2A01
DTC P2A01 indicates a performance issue with the oxygen sensor,
P2A02
P2A02 indicates a performance issue with the oxygen sensor bank 1 sensor 1,
P2A03
P2A03 indicates a fault in the oxygen sensor circuit's range or performance.
P2A04
P2A04 indicates a problem with the oxygen sensor signal range or performance.
P2A05
P2A05 refers to an oxygen sensor circuit performance issue, often linked to t...
P2A06
P2A06 indicates a malfunction in the bank 1 oxygen sensor's performance.
P2A07
P2A07 indicates an issue with the oxygen sensor performance or range,
P2A08
P2A08 indicates a performance issue with the oxygen sensor circuit.
P2A09
P2A09 indicates an oxygen sensor performance issue.
P2A0A
P2A0A refers to a problem with the oxygen sensor's range or performance
P2A0B
P2A0B indicates an oxygen sensor performance issue, affecting engine efficiency.
P2A0C
The P2A0C code indicates a problem with the oxygen sensor circuit performance.
P2A0D
P2A0D indicates a performance issue with the oxygen sensor affecting fuel mix...
P2A0E
The P2A0E code indicates an oxygen sensor performance issue, typically affect...
P2A0F
The DTC P2A0F is a diagnostic trouble code that indicates a problem with the ...
P2A10
P2A10 indicates an issue with the oxygen sensor circuit's range or performance.
P2A11
P2A11 indicates a performance issue with the oxygen sensor circuit.
P2A12
P2A12 indicates a problem with the oxygen sensor circuit, affecting engine pe...
P2A13
DTC P2A13 indicates an issue with the oxygen sensor's circuit in bank 1.
P2A14
DTC P2A14 indicates an oxygen sensor performance issue, often related to inco...
P2A15
DTC P2A15 indicates an oxygen sensor performance issue, affecting fuel effici...
P2A16
The P2A16 code means there's an issue with the air-fuel ratio sensor reportin...
P2A17
DTC P2A17 indicates a malfunction in the oxygen sensor, affecting engine perf...
P2A18
P2A18 refers to a performance issue with the oxygen sensor circuit in bank two.
P2A19
P2A19 indicates a performance issue with the bank 1 O2 sensor circuit.
P2A1A
P2A1A indicates an oxygen sensor circuit performance issue.
P2A1B
The P2A1B code indicates a malfunction in the oxygen sensor circuit,
P2A1C
P2A1C indicates a malfunction in the air-fuel ratio sensor circuit.
P2A1D
P2A1D indicates a range/performance problem with the oxygen sensor signal.
P2A1E
The P2A1E code refers to a performance issue with the oxygen sensor.
P2A1F
The P2A1F code signifies a problem with the oxygen sensor signal,
P2A20
P2A20 indicates an issue with the oxygen sensor circuit's performance.
P2A21
P2A21 indicates a range or performance issue with the oxygen sensor.
P2A22
P2A22 indicates an oxygen sensor performance issue related to air-fuel mixture.
P2A23
P2A23 indicates a range or performance issue with the oxygen sensor circuit.
P2A24
P2A24 indicates an issue with the air-fuel ratio sensor on bank 1.
P2A25
P2A25 indicates a malfunction with the air-fuel ratio sensor before the catal...
P2A26
P2A26 indicates an issue with the air-fuel ratio sensor output.
P2A27
The P2A27 code signals an oxygen sensor performance issue, often leading to p...
P2A28
P2A28 indicates a problem with the oxygen sensor circuit related to air-fuel ...
P2A29
DTC P2A29 indicates a performance problem with the oxygen sensor,
P2A2A
P2A2A indicates a fault with the oxygen sensor's performance in the fuel trim...
P2A2B
The P2A2B code relates to oxygen sensor performance issues, indicating that t...
P2A2C
DTC P2A2C indicates an oxygen sensor performance issue, typically linked to t...
P2A2D
P2A2D indicates a performance problem with the oxygen sensor, affecting air-f...
P2A2E
DTC P2A2E indicates a performance issue with the oxygen sensor,
P2A2F
P2A2F indicates an O2 sensor performance problem.
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