P29xx OBD-II Codes (P2900–P2999)

100 fault codes in the P29xx range. Click any code for causes, diagnostic steps, severity, and common fixes.

P2900 critical
Transmission Gear Ratio Error
P2901 critical
Transmission Gear Ratio Error - First Gear
P2902 critical
Transmission Gear Ratio Error - Second Gear
P2903 critical
Transmission Gear Ratio Error - Third Gear
P2904 moderate
Transmission Gear Ratio Error - Fourth Gear
P2905 moderate
Transmission Gear Ratio Error - Fifth Gear
P2906 moderate
Transmission Gear Ratio Error - Sixth Gear
P2907 critical
Transmission Gear Ratio Error - Reverse
P2908 moderate
Transmission Gear Ratio Error - Seventh Gear
P2909 moderate
Transmission Gear Ratio Error - Eighth Gear
P2910 moderate
Transmission Gear Ratio Error - Ninth Gear
P2911 moderate
Transmission Gear Ratio Error - Tenth Gear
P2912 moderate
Transmission Gear Selection Forced Neutral
P2913 moderate
Transmission Gear Selection Forced Low
P2914 moderate
Transmission Multiple Gear Ratio Errors
P2915 moderate
Transmission Gear Engagement Time Too Long
P2916 low
Transmission Gear Disengagement Time Too Long
P2917 low
Transmission Shift Time Too Short
P2918 low
Transmission Shift Time Too Long
P2919 low
Transmission Adaptive Shift Quality Below Threshold
P2920 critical
Transmission Clutch A Stuck On
P2921 critical
Transmission Clutch A Stuck Off
P2922 critical
Transmission Clutch B Stuck On
P2923 critical
Transmission Clutch B Stuck Off
P2924 critical
Transmission Clutch C Stuck On
P2925 critical
Transmission Clutch C Stuck Off
P2926 critical
Transmission Clutch D Stuck On
P2927 critical
Transmission Clutch D Stuck Off
P2928 critical
Transmission Clutch E Stuck On
P2929 critical
Transmission Clutch E Stuck Off
P2930 critical
Transmission Clutch F Stuck On
P2931 critical
Transmission Clutch F Stuck Off
P2932 critical
Transmission Brake A Stuck On
P2933 critical
Transmission Brake A Stuck Off
P2934 critical
Transmission Brake B Stuck On
P2935 critical
Transmission Brake B Stuck Off
P2936 moderate
Transmission Friction Element A Slipping
P2937 moderate
Transmission Friction Element B Slipping
P2938 moderate
Transmission Friction Element C Slipping
P2939 moderate
Transmission Friction Element D Slipping
P2940 moderate
Transmission One-Way Clutch A Slipping
P2941 moderate
Transmission One-Way Clutch B Slipping
P2942 moderate
Transmission Accumulator A Malfunction
P2943 moderate
Transmission Accumulator B Malfunction
P2944 moderate
Transmission Control Module Reprogramming Needed
P2945 moderate
Transmission Control Module Internal Error
P2946 moderate
Transmission Control Module Overtemperature
P2947 moderate
Transmission Cooler Performance Below Threshold
P2948 moderate
Transmission Cooler Bypass Valve Stuck Open
P2949 moderate
Transmission Cooler Bypass Valve Stuck Closed
P2950 moderate
Hybrid Transmission Motor A Performance
P2951 moderate
Hybrid Transmission Motor A Circuit
P2952 moderate
Hybrid Transmission Motor A Circuit Low
P2953 moderate
Hybrid Transmission Motor A Circuit High
P2954 moderate
Hybrid Transmission Motor B Performance
P2955 moderate
Hybrid Transmission Motor B Circuit
P2956 moderate
Hybrid Transmission Motor B Circuit Low
P2957 moderate
Hybrid Transmission Motor B Circuit High
P2958 moderate
Hybrid Transmission Clutch A Position
P2959 moderate
Hybrid Transmission Clutch A Control
P2960 moderate
Hybrid Transmission Clutch B Position
P2961 moderate
Hybrid Transmission Clutch B Control
P2962 moderate
Hybrid Transmission Mode Switch Circuit
P2963 moderate
Hybrid Transmission Mode Switch Range/Performance
P2964 moderate
Hybrid Transmission Mode Switch Circuit Low
P2965 moderate
Hybrid Transmission Mode Switch Circuit High
P2966 moderate
Hybrid Transmission Oil Pump Motor Circuit
P2967 moderate
Hybrid Transmission Oil Pump Motor Performance
P2968 moderate
Hybrid Transmission Oil Pump Pressure Low
P2969 moderate
Hybrid Transmission Oil Pump Pressure High
P2970 moderate
Electric Drive Motor A Torque Accuracy
P2971 moderate
Electric Drive Motor A Speed Accuracy
P2972 critical
Electric Drive Motor A Temperature Too High
P2973 moderate
Electric Drive Motor A Resolver Circuit
P2974 moderate
Electric Drive Motor B Torque Accuracy
P2975 moderate
Electric Drive Motor B Speed Accuracy
P2976 critical
Electric Drive Motor B Temperature Too High
P2977 moderate
Electric Drive Motor B Resolver Circuit
P2978 moderate
Hybrid Transmission Control Module Communication Error
P2979 moderate
Hybrid Transmission Control Module Internal Fault
P2980 moderate
Hybrid Transmission Gear Actuator A Circuit
P2981 moderate
Hybrid Transmission Gear Actuator A Performance
P2982 moderate
Hybrid Transmission Gear Actuator B Circuit
P2983 moderate
Hybrid Transmission Gear Actuator B Performance
P2984 critical
Hybrid Transmission Disconnect Clutch Stuck Open
P2985 critical
Hybrid Transmission Disconnect Clutch Stuck Closed
P2986 moderate
Hybrid Transmission Disconnect Clutch Circuit
P2987 moderate
Hybrid Transmission Disconnect Clutch Performance
P2988 moderate
Hybrid Transmission Regenerative Braking Reduced
P2989 moderate
Hybrid Transmission Regenerative Braking Disabled
P2990 moderate
Hybrid Transmission Power Limit Active
P2991 moderate
Hybrid Transmission Efficiency Below Threshold
P2992 critical
Hybrid Transmission Inverter Overtemperature
P2993 moderate
Hybrid Transmission Inverter Communication Error
P2994 critical
Hybrid Transmission High Voltage Interlock
P2995 critical
Hybrid Transmission High Voltage Isolation Fault
P2996 moderate
Hybrid Transmission Cooling System Performance
P2997 moderate
Hybrid Transmission Cooling Pump Circuit
P2998 moderate
Hybrid Transmission Oil Level Low
P2999 critical
Hybrid Transmission Fluid Temperature Sensor Circuit
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