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 pinion-relay open circuit is checked with power commanded on
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Generic OBD-II
P26E5
Low pinion-relay feedback uses its own starting-voltage boundary
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Generic OBD-II
P26E6
An off-state starter-relay signal remains powered
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Generic OBD-II
P26E7
Supply D open-load may be discovered only when shutting down
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Generic OBD-II
P26E8
Supply D circuit low includes a high-current failure branch
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Generic OBD-II
P26E9
Supply D high describes an HSO8 shutdown-state failure
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Generic OBD-II
P26EA
Pump B internal-error feedback is not lost communication
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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 exceeds an absolute speed limit
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Generic OBD-II
P26FB
EGR bypass stuck closed: restricted vacuum supply versus valve damage
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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-valve performance includes position and reported-state evidence
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Generic OBD-II
P26FF
Auto Configuration Throttle Input Not Present Bank 2
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Generic OBD-II
P2700
Ford 5R110W coast clutch fails its functional check
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Generic OBD-II
P2701
Ford 10R80 clutch leakage requires a measured diagnosis
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Generic OBD-II
P2702
Ford 5R110W intermediate clutch functional failure
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Generic OBD-II
P2703
Ford 5R110W direct clutch on/off performance fault
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Generic OBD-II
P2704
Ford 5R110W low/reverse clutch functional fault
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Generic OBD-II
P2705
Transmission Friction Element F Apply Time Range/Performance
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Generic OBD-II
P2706
the Jeep multi-select solenoid continuity check
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Generic OBD-II
P2707
Solenoid F failed-off monitoring evaluates response history
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Generic OBD-II
P2708
A functionally failed-on F result is judged against the requested state
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Generic OBD-II
P2709
The F electrical code has architecture-dependent detail in Ford’s tables
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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
The Ford F-channel tables disagree on the displayed failure mapping
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Generic OBD-II
P2711
DSG gear disengagement needs speed and fault-subtype evidence
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Generic OBD-II
P2712
CW6A-EL hydraulic support during i-stop
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Generic OBD-II
P2713
Electronic pressure-control valve 4 in the BMW transmission
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Generic OBD-II
P2714
CVT forward-clutch pressure control fails hydraulically off
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Generic OBD-II
P2715
GR10 clutch C4 retains hydraulic holding pressure when released
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Generic OBD-II
P2716
solenoid D electrical diagnosis accumulates current-tracking error
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Generic OBD-II
P2717
Pressure Control Solenoid D Intermittent
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Generic OBD-II
P2718
Solenoid D control circuit has an open electrical path
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Generic OBD-II
P2719
solenoid D performance is checked during a stable current command
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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
Solenoid D control circuit indicates a ground short
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Generic OBD-II
P2721
Solenoid D control circuit detects a short to voltage
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Generic OBD-II
P2722
Pressure Control Solenoid E
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Generic OBD-II
P2723
CVT torque-converter clutch does not achieve its requested coupling
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Generic OBD-II
P2724
CVT torque-converter clutch remains coupled when release is expected
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Generic OBD-II
P2725
solenoid E feedback error is accumulated and reset conditionally
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Generic OBD-II
P2726
Pressure Control Solenoid E Intermittent
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Generic OBD-II
P2727
Solenoid E circuit is electrically open in the selected transmission
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Generic OBD-II
P2728
Solenoid performance includes current, switching frequency and duty agreement
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Generic OBD-II
P2729
Solenoid E control circuit has a ground-short signature
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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
Solenoid E control circuit reports unwanted voltage
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Generic OBD-II
P2731
A clutch fails to release despite an electrically functional solenoid
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Generic OBD-II
P2732
GR10 clutch C6 slips despite its commanded application
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Generic OBD-II
P2733
GR10 clutch C6 fails to release during a shift
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Generic OBD-II
P2734
solenoid F diagnosis uses cumulative command-versus-feedback error
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Generic OBD-II
P2735
A clutch-lubrication valve fault uses repeated current-profile checks
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Generic OBD-II
P2736
Solenoid F has an open circuit, with function determined by transmission type
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Generic OBD-II
P2737
CVT binary-pump control fails its two-mode pressure comparison
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Generic OBD-II
P2738
Solenoid F electrical path indicates a short to ground
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Generic OBD-II
P2739
Solenoid F circuit-high diagnosis needs care with conflicting source columns
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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
Two different checks can flag the cooler-out temperature signal
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Generic OBD-II
P2742
Cooler-out temperature circuit low is a voltage-window fault
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Generic OBD-II
P2743
A high cooler-temperature circuit does not prove hot fluid
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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.