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Generic OBD-II code references — Page 64.

Read the source definition and confirm the exact vehicle, reporting module and diagnostic procedure.

9,249 code references for Generic OBD-II

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.