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 6001-6100 of 12293 total codes

P17XX Engine Control System

P1770
P1770 indicates a transmission control malfunction, affecting shifting perfor...
P1771
P1771 indicates a malfunction in the transmission control system related to f...
P1772
DTC P1772 indicates a malfunction in the Transmission Control Module (TCM),
P1773
DTC P1773 indicates a malfunction in the Transmission Control Module,
P1774
DTC P1774 signals a transmission fluid pressure issue, potentially leading to...
P1775
P1775 indicates a malfunction in the transmission pressure control solenoid.
P1776
P1776 indicates a malfunction in the Transmission Control Module (TCM).
P1777
P1777 indicates a malfunction in the transmission control system,
P1778
P1778 indicates a malfunction in the Transmission Control Module (TCM).
P1779
P1779 indicates a fault in the transmission control system, affecting shiftin...
P177A
P177A indicates a performance issue with the Transmission Fluid Temperature s...
P177B
P177B indicates a problem with the transmission range sensor performance.
P177C
The P177C code indicates a problem with the transmission control module relat...
P177D
P177D indicates a malfunction in the transmission control system,
P177E
The P177E code indicates a problem with the transmission range sensor's perfo...
P177F
P177F indicates a communication problem with the Transmission Control Module,...
P1780
P1780 indicates a malfunction in the transmission range sensor circuit,
P1781
P1781 indicates a problem with the transmission range sensor circuit,
P1782
DTC P1782 refers to a malfunction in the transmission range sensor circuit,
P1783
DTC P1783 signifies an issue with the transmission range sensor,
P1784
P1784 indicates a malfunction with the transmission range sensor,
P1785
P1785 indicates a problem with the transmission range sensor circuit,
P1786
P1786 indicates a problem with the transmission range sensor, affecting gear ...
P1787
The P1787 code signifies a malfunction in the transmission range sensor circu...
P1788
P1788 indicates a high input signal from the transmission range sensor circui...
P1789
P1789 indicates that there's a problem with the transmission fluid pressure s...
P178A
P178A indicates a performance problem with the transmission range sensor,
P178B
DTC P178B indicates a malfunction with the transmission range sensor,
P178C
P178C indicates a problem with the transmission range sensor circuit,
P178D
DTC P178D indicates a potential issue with the transmission range sensor or t...
P178E
P178E indicates a performance issue with the transmission range sensor.
P178F
P178F indicates a fault with the Transmission Control Module affecting transm...
P1790
DTC P1790 signifies a problem with the transmission range sensor,
P1791
P1791 indicates a malfunction in the Transmission Control Module (TCM),
P1792
DTC P1792 indicates a communication error between the Transmission Control Mo...
P1793
P1793 indicates a communication error between the Transmission Control Module...
P1794
P1794 indicates a problem with the Transmission Control Module's performance.
P1795
DTC P1795 indicates a problem with the Transmission Control Module (TCM) or i...
P1796
P1796 indicates a malfunction in the transmission control system,
P1797
P1797 indicates a communication issue with the transmission control module.
P1798
DTC P1798 signifies a communication failure between the Transmission Control ...
P1799
DTC P1799 indicates a malfunction with the transmission range switch affectin...
P179A
P179A indicates a performance issue with the Transmission Control Module.
P179B
The P179B code signifies a communication issue between the TCM and ECM.
P179C
P179C indicates a communication fault between the Transmission Control Module...
P179D
P179D indicates a malfunction in the Transmission Control Module,
P179E
The P179E code indicates a problem with the Transmission Control Module,
P179F
P179F indicates a fault with the Transmission Control Module, affecting trans...
P17A0
The P17A0 code indicates a malfunction in the Transmission Control Module (TC...
P17A1
P17A1 indicates a malfunction with the transmission range sensor,
P17A2
P17A2 indicates a malfunction in the transmission range sensor,
P17A3
P17A3 indicates a malfunction in the transmission range sensor.
P17A4
DTC P17A4 signifies a problem with the Transmission Control Module's input/ou...
P17A5
P17A5 indicates a fault with the Transmission Control Module's communication,...
P17A6
DTC P17A6 is a diagnostic trouble code that indicates a problem with the vehi...
P17A7
The P17A7 code indicates a malfunction in the transmission control module's g...
P17A8
DTC P17A8 indicates a malfunction in the transmission range sensor,
P17A9
P17A9 indicates a malfunction in the hybrid control system of vehicles like t...
P17AA
P17AA indicates a malfunction in the hybrid battery management system,
P17AB
P17AB indicates a fault in the Transmission Control Module (TCM) that affects...
P17AC
P17AC is a trouble code indicating a hybrid control system malfunction,
P17AD
P17AD indicates a malfunction with the automatic transmission range sensor,
P17AE
P17AE indicates a communication issue with the Transmission Control Module (T...
P17AF
P17AF indicates a transmission control module communication issue.
P17B0
P17B0 indicates a malfunction in the Transmission Control Module (TCM),
P17B1
DTC P17B1 signifies a transmission control module configuration issue.
P17B2
P17B2 indicates a fault in the Transmission Control Module, affecting gear sh...
P17B3
DTC P17B3 indicates a malfunction related to the transmission range sensor,
P17B4
Indicates a performance issue with the transmission range sensor,
P17B5
P17B5 indicates a communication error between the Transmission Control Module...
P17B6
DTC P17B6 indicates a transmission control system issue, often related to the...
P17B7
P17B7 indicates a problem with the transmission fluid temperature sensor volt...
P17B8
P17B8 signifies a malfunction in the Transmission Control Module,
P17B9
P17B9 indicates a problem with the Transmission Control Module's communicatio...
P17BA
P17BA indicates a transmission malfunction detected by the powertrain control...
P17BB
P17BB refers to a malfunction in the Transmission Control Module,
P17BC
P17BC indicates a communication error between the TCM and ECM.
P17BD
P17BD indicates a malfunction with the transmission range sensor,
P17BE
The P17BE code signifies an issue with the transmission range sensor circuit,...
P17BF
DTC P17BF is a diagnostic trouble code that indicates a problem with the Tran...
P17C0
P17C0 indicates a transmission control module issue, affecting transmission p...
P17C1
DTC P17C1 indicates a transmission range sensor issue, affecting the vehicle'...
P17C2
P17C2 indicates a performance issue with the Transmission Control Module.
P17C3
Indicates a problem with the transmission fluid temperature sensor circuit.
P17C4
P17C4 indicates a malfunction related to the transmission speed sensor perfor...
P17C5
DTC P17C5 refers to a transmission fluid temperature sensor issue.
P17C6
P17C6 indicates a transmission control issue detected by the vehicle's powert...
P17C7
DTC P17C7 indicates a communication error between the Transmission Control Mo...
P17C8
DTC P17C8 indicates a malfunction in the transmission control module (TCM) af...
P17C9
DTC P17C9 indicates a malfunction in the transmission range sensor or its cir...
P17CA
P17CA indicates a transmission control system fault, particularly with the sh...
P17CB
DTC P17CB indicates a problem with the throttle position sensor signal to the...
P17CC
P17CC indicates a transmission control issue related to the gear shifting sys...
P17CD
The diagnostic trouble code (DTC) P17CD indicates a fault in the Transmission...
P17CE
P17CE indicates a transmission control module issue, particularly in Toyota v...
P17CF
P17CF indicates a fault in the Transmission Control Module, affecting gear sh...
P17D0
DTC P17D0 indicates a malfunction in the Transmission Control Module (TCM),
P17D1
P17D1 indicates a malfunction in the Automatic Transmission Control Module.
P17D2
P17D2 refers to a communication error between the Transmission Control Module...
P17D3
P17D3 is a code indicating a performance issue with the Transmission Control ...
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