MANUFACTURER REFERENCE
Generic OBD-II code references — Page 64.
Read the source definition and confirm the exact vehicle, reporting module and diagnostic procedure.
Generic OBD-II
P278B
Kick Down Switch Circuit Range/Performance
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Generic OBD-II
P278C
Kick Down Switch Circuit Low
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Generic OBD-II
P278D
Kick Down Switch Circuit High
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Generic OBD-II
P278E
Kick Down Switch Circuit Intermittent/Erratic
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Generic OBD-II
P278F
Clutch B Adaptive Learning at Limit
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Generic OBD-II
P2790
Gate Select Direction Circuit
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Generic OBD-II
P2791
Gate Select Direction Circuit Low
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Generic OBD-II
P2792
Gate Select Direction Circuit High
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Generic OBD-II
P2793
Gear Shift Direction Circuit
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Generic OBD-II
P2794
Gear Shift Direction Circuit Low
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Generic OBD-II
P2795
Gear Shift Direction Circuit High
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Generic OBD-II
P2796
Auxiliary transmission-pump motor circuit is diagnosed open
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Generic OBD-II
P2797
CVT auxiliary pump supplies inadequate pressure during an auto-stop event
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Generic OBD-II
P2798
Auxiliary transmission-pump control circuit is electrically low
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Generic OBD-II
P2799
Auxiliary transmission-pump control circuit detects unwanted power
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Generic OBD-II
P279A
transfer-case high-range command disagrees with measured ratio
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Generic OBD-II
P279B
transfer-case low-range command disagrees with measured ratio
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Generic OBD-II
P279C
transfer-case range information that needs a careful cross-check
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Generic OBD-II
P279D
Four Wheel Drive (4WD) Range Signal Circuit
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Generic OBD-II
P279E
Four Wheel Drive (4WD) Range Signal Circuit Range/Performance
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Generic OBD-II
P279F
Four Wheel Drive (4WD) Range Signal Circuit Low
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Generic OBD-II
P27A0
Four Wheel Drive (4WD) Range Signal Circuit High
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Generic OBD-II
P27A1
Electric/Auxiliary Transmission Fluid Pump A Stuck On
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Generic OBD-II
P27A2
Electric/Auxiliary Transmission Fluid Pump B Control Circuit/Open
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Generic OBD-II
P27A3
Electric/Auxiliary Transmission Fluid Pump B Performance/Stuck Off
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Generic OBD-II
P27A4
Electric/Auxiliary Transmission Fluid Pump B Control Circuit Low
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Generic OBD-II
P27A5
Electric/Auxiliary Transmission Fluid Pump B Control Circuit High
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Generic OBD-II
P27A6
Electric/Auxiliary Transmission Fluid Pump B Stuck On
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Generic OBD-II
P27A7
Solenoid A characterization data does not match a valid programmed set
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Generic OBD-II
P27A8
Solenoid B data fails the transmission controller’s compatibility check
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Generic OBD-II
P27A9
Solenoid C calibration data fails completeness or integrity checks
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Generic OBD-II
P27AA
Solenoid D characterization is not accepted as correctly programmed
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Generic OBD-II
P27AB
Solenoid E characterization data is missing, incompatible or invalid
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Generic OBD-II
P27AC
Solenoid F stored characterization does not pass startup validation
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Generic OBD-II
P27AD
pressure-control solenoid G characterization data is invalid
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Generic OBD-II
P27AE
pressure-control solenoid H characterization fails validation
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Generic OBD-II
P27AF
Pressure Control Solenoid J Data Incompatible
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Generic OBD-II
P27B0
Pressure Control Solenoid K Data Incompatible
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Generic OBD-II
P27B1
Internal Control Module Transmission Range Select Performance
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Generic OBD-II
P27B2
Range-control supervision can involve parking-lock safety
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Generic OBD-II
P27B3
The transmission architecture determines what this supervision code means
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Generic OBD-II
P27B4
Gear-direction supervision distinguishes launch from wrong-direction events
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Generic OBD-II
P27B5
Overspeed protection and ratio plausibility are different supervision branches
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Generic OBD-II
P27B6
Transmission tie-up protection and deceleration supervision need different context
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Generic OBD-II
P27B9
Shift solenoid two stuck-off is checked with controlled rod movements
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Generic OBD-II
P27BA
A stuck-on shift valve is inferred from two rods moving differently
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Generic OBD-II
P27BB
Pressure Control Solenoid N Electrical
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Generic OBD-II
P27BC
Pressure Control Solenoid N Intermittent
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Generic OBD-II
P27BD
Shift valve two open-load is assessed with the output off
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Generic OBD-II
P27BE
Pressure Control Solenoid N Control Circuit Range/Performance
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Generic OBD-II
P27BF
Shift valve two circuit-low concerns driver feedback during switching
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Generic OBD-II
P27C0
Shift valve two circuit-high has a shutdown cross-circuit check too
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Generic OBD-II
P27C1
Valve three stuck-off needs a second path to validate rod feedback
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Generic OBD-II
P27C2
Valve three stuck-on is a paired rod-response pattern
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Generic OBD-II
P27C3
Pressure Control Solenoid P Electrical
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Generic OBD-II
P27C4
Pressure Control Solenoid P Intermittent
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Generic OBD-II
P27C5
An open valve-three circuit is evaluated before hydraulic conclusions
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Generic OBD-II
P27C6
Pressure Control Solenoid P Control Circuit Range/Performance
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Generic OBD-II
P27C7
Valve-three low-circuit diagnosis requires its electrical test context
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Generic OBD-II
P27C8
Valve-three circuit high can be retained from a shutdown test
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Generic OBD-II
P27C9
Valve-four stuck-off compares failed motion with a working alternate path
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Generic OBD-II
P27CA
Valve-four stuck-on requires unexpected travel and partner relaxation
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Generic OBD-II
P27CB
Pressure Control Solenoid R Electrical
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Generic OBD-II
P27CC
Pressure Control Solenoid R Intermittent
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Generic OBD-II
P27CD
Valve-four open-load uses the circuit’s off-state response
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Generic OBD-II
P27CE
Pressure Control Solenoid R Control Circuit Range/Performance
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Generic OBD-II
P27CF
Valve-four circuit low is an electrical report, not a hydraulic verdict
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Generic OBD-II
P27D0
Valve-four high can also mean a shutdown interaction with another output
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Generic OBD-II
P27D1
Valve five needs current-profile evidence because no alternate path exists
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Generic OBD-II
P27D2
Valve-five stuck-on uses a larger single-rod movement criterion
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Generic OBD-II
P27D3
Pressure Control Solenoid S Electrical
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Generic OBD-II
P27D4
Pressure Control Solenoid S Intermittent
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Generic OBD-II
P27D5
Valve-five open-load remains an electrical off-state test
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Generic OBD-II
P27D6
Pressure Control Solenoid S Control Circuit Range/Performance
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Generic OBD-II
P27D7
Valve-five low-circuit classification must be separated from stuck-off behavior
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Generic OBD-II
P27D8
Valve-five circuit high has two distinct event histories
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Generic OBD-II
P27D9
Pressure Control Solenoid T Performance/Stuck Off
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Generic OBD-II
P27DA
Pressure Control Solenoid T Stuck On
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Generic OBD-II
P27DB
Pressure Control Solenoid T Electrical
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Generic OBD-II
P27DC
Pressure Control Solenoid T Intermittent
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Generic OBD-II
P27DD
Pressure Control Solenoid T Control Circuit/Open
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Generic OBD-II
P27DE
Pressure Control Solenoid T Control Circuit Range/Performance
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Generic OBD-II
P27DF
Pressure Control Solenoid T Control Circuit Low
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Generic OBD-II
P27E0
Pressure Control Solenoid T Control Circuit High
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Generic OBD-II
P27E1
Electric/Auxiliary Transmission Fluid Pump A Pressure Too Low
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Generic OBD-II
P27E2
Electric/Auxiliary Transmission Fluid Pump B Pressure Too Low
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Generic OBD-II
P27E3
Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit/Open
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Generic OBD-II
P27E4
Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit Range/Performance
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Generic OBD-II
P27E5
Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit Low
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Generic OBD-II
P27E6
Electric/Auxiliary Transmission Fluid Pump Control Valve Circuit High
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Generic OBD-II
P27E7
Transmission Range Control B Circuit/Open
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Generic OBD-II
P27E8
Transmission Range Control B Circuit Performance
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Generic OBD-II
P27E9
Transmission Range Control B Circuit Low
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Generic OBD-II
P27EA
Transmission Range Control B Circuit High
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Generic OBD-II
P27EB
mode-valve A position signal occupies an illegal voltage band
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Generic OBD-II
P27EC
mode-valve A position does not follow its commanded state
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Generic OBD-II
P27ED
mode-valve A position circuit voltage is too low
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Generic OBD-II
P27EE
mode-valve A position signal exceeds its electrical limit
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Generic OBD-II
P27EF
An invalid middle-band voltage can produce a circuit-open result
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Generic OBD-II
P27F0
Mode-valve feedback fails to follow a range command
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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.