P CODE FAMILY
Powertrain code references — Page 81.
Engine, transmission and powertrain diagnostic references. Exact vehicle and module context still matters.
Generic OBD-II
P26DF
Sensor Power Supply D Circuit/Open
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Generic OBD-II
P26E0
Sensor Power Supply D Circuit Low
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Generic OBD-II
P26E1
Sensor Power Supply D Circuit High
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Generic OBD-II
P26E2
Fuel Mode Indicator Lamp Control Circuit Low
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Generic OBD-II
P26E3
Fuel Mode Indicator Lamp Control Circuit High
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Generic OBD-II
P26E4
Starter Relay B Circuit
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Generic OBD-II
P26E5
Starter Relay B Circuit Low
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Generic OBD-II
P26E6
Starter Relay B Circuit High
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Generic OBD-II
P26E7
Actuator Supply Voltage D Circuit/Open
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Generic OBD-II
P26E8
Actuator Supply Voltage D Circuit Low
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Generic OBD-II
P26E9
Actuator Supply Voltage D Circuit High
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Generic OBD-II
P26EA
Fuel Pump Control Module B
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Generic OBD-II
P26EB
Alternative Fuel Control Module System Voltage
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Generic OBD-II
P26EC
Engine Sound Control B Circuit/Open
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Generic OBD-II
P26ED
Engine Sound Control B Circuit Low
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Generic OBD-II
P26EE
Engine Sound Control B Circuit High
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Generic OBD-II
P26EF
Engine Sound Control B Circuit Performance
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Generic OBD-II
P26F0
Starter Relay A Stuck On
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Generic OBD-II
P26F1
Starter Relay A Stuck Off
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Generic OBD-II
P26F2
Starter Relay B Stuck On
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Generic OBD-II
P26F3
Starter Relay B Stuck Off
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Generic OBD-II
P26F4
Coolant Pump C Control Circuit/Open
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Generic OBD-II
P26F5
Coolant Pump C Control Circuit Low
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Generic OBD-II
P26F6
Coolant Pump C Control Circuit High
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Generic OBD-II
P26F7
Coolant Pump C Supply Voltage Circuit
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Generic OBD-II
P26F8
Coolant Pump C Stuck/Stalled
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Generic OBD-II
P26F9
Coolant Pump C Control Module Overtemperature
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Generic OBD-II
P26FA
Coolant Pump C Overspeed/Air in System
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Generic OBD-II
P26FB
EGR Cooler Bypass Control Stuck Closed Bank 1
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Generic OBD-II
P26FC
EGR Cooler Bypass Control Stuck Closed Bank 2
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Generic OBD-II
P26FD
A/C Compressor Internal Control Module Performance
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Generic OBD-II
P26FE
Exhaust Flow Control Valve A Control Performance
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Generic OBD-II
P26FF
Auto Configuration Throttle Input Not Present Bank 2
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Generic OBD-II
P2700
Transmission Friction Element A Apply Time Range/Performance
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Generic OBD-II
P2701
Transmission Friction Element B Apply Time Range/Performance
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Generic OBD-II
P2702
Transmission Friction Element C Apply Time Range/Performance
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Generic OBD-II
P2703
Transmission Friction Element D Apply Time Range/Performance
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Generic OBD-II
P2704
Transmission Friction Element E Apply Time Range/Performance
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Generic OBD-II
P2705
Transmission Friction Element F Apply Time Range/Performance
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Generic OBD-II
P2706
Shift Solenoid F
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Generic OBD-II
P2707
Shift Solenoid F Performance/Stuck Off
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Generic OBD-II
P2708
Shift Solenoid F Stuck On
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Generic OBD-II
P2709
Shift Solenoid F Electrical
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Generic OBD-II
P270A
Transmission Friction Element A Temperature Too High
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Generic OBD-II
P270B
Transmission Friction Element B Temperature Too High
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Generic OBD-II
P270C
Transmission Friction Element C Temperature Too High
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Generic OBD-II
P270D
Transmission Friction Element D Temperature Too High
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Generic OBD-II
P270E
Transmission Friction Element E Temperature Too High
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Generic OBD-II
P270F
Transmission Friction Element F Temperature Too High
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Generic OBD-II
P2710
Shift Solenoid F Intermittent
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Generic OBD-II
P2711
Unexpected Mechanical Gear Disengagement
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Generic OBD-II
P2712
Hydraulic Power Unit Leakage
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Generic OBD-II
P2713
Pressure Control Solenoid D
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Generic OBD-II
P2714
Pressure Control Solenoid D Performance/Stuck Off
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Generic OBD-II
P2715
Pressure Control Solenoid D Stuck On
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Generic OBD-II
P2716
Pressure Control Solenoid D Electrical
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Generic OBD-II
P2717
Pressure Control Solenoid D Intermittent
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Generic OBD-II
P2718
Pressure Control Solenoid D Control Circuit/Open
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Generic OBD-II
P2719
Pressure Control Solenoid D Control Circuit Range/Performance
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Generic OBD-II
P271A
Park Pawl Position Sensor A Circuit Low
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Generic OBD-II
P271B
Park Pawl Position Sensor A Circuit High
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Generic OBD-II
P271C
Park Pawl Position Sensor B Circuit Low
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Generic OBD-II
P271D
Park Pawl Position Sensor B Circuit High
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Generic OBD-II
P271E
Transmission Performance
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Generic OBD-II
P271F
Electronic Gear Shift - Position Not Learned
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Generic OBD-II
P2720
Pressure Control Solenoid D Control Circuit Low
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Generic OBD-II
P2721
Pressure Control Solenoid D Control Circuit High
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Generic OBD-II
P2722
Pressure Control Solenoid E
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Generic OBD-II
P2723
Pressure Control Solenoid E Performance/Stuck Off
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Generic OBD-II
P2724
Pressure Control Solenoid E Stuck On
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Generic OBD-II
P2725
Pressure Control Solenoid E Electrical
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Generic OBD-II
P2726
Pressure Control Solenoid E Intermittent
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Generic OBD-II
P2727
Pressure Control Solenoid E Control Circuit/Open
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Generic OBD-II
P2728
Pressure Control Solenoid E Control Circuit Range/Performance
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Generic OBD-II
P2729
Pressure Control Solenoid E Control Circuit Low
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Generic OBD-II
P272A
Transmission Range Select Motor Control Circuit
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Generic OBD-II
P272B
Transmission Range Select Motor Control Circuit Current Too High
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Generic OBD-II
P272C
Park Pawl Motor Control Circuit
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Generic OBD-II
P272D
Park Pawl Motor Control Circuit Current Too High
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Generic OBD-II
P2730
Pressure Control Solenoid E Control Circuit High
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Generic OBD-II
P2731
Pressure Control Solenoid F
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Generic OBD-II
P2732
Pressure Control Solenoid F Performance/Stuck Off
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Generic OBD-II
P2733
Pressure Control Solenoid F Stuck On
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Generic OBD-II
P2734
Pressure Control Solenoid F Electrical
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Generic OBD-II
P2735
Pressure Control Solenoid F Intermittent
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Generic OBD-II
P2736
Pressure Control Solenoid F Control Circuit/Open
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Generic OBD-II
P2737
Pressure Control Solenoid F Control Circuit Range/Performance
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Generic OBD-II
P2738
Pressure Control Solenoid F Control Circuit Low
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Generic OBD-II
P2739
Pressure Control Solenoid F Control Circuit High
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Generic OBD-II
P273A
Transmission Friction Element G Apply Time Range/Performance
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Generic OBD-II
P273B
Transmission Friction Element H Apply Time Range/Performance
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Generic OBD-II
P273C
Gear Shift Control Module A Supply Voltage Low
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Generic OBD-II
P273D
Gear Shift Control Module A Supply Voltage High
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Generic OBD-II
P273E
Gear Shift Control Module A Over Temperature
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Generic OBD-II
P273F
Transmission Fluid Temperature Sensor B Over Temperature Condition
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Generic OBD-II
P2740
Transmission Fluid Temperature Sensor B Circuit
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Generic OBD-II
P2741
Transmission Fluid Temperature Sensor B Circuit Range/Performance
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Generic OBD-II
P2742
Transmission Fluid Temperature Sensor B Circuit Low
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Generic OBD-II
P2743
Transmission Fluid Temperature Sensor B Circuit High
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Generic OBD-II
P2744
Transmission Fluid Temperature Sensor B Circuit Intermittent
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These are code references, not a list of confirmed faults on every vehicle. Read the source and applicability notes, then match the exact vehicle, year, engine and scan report.