P CODE FAMILY
Powertrain code references — Page 83.
Engine, transmission and powertrain diagnostic references. Exact vehicle and module context still matters.
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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Generic OBD-II
P27F1
Low range-position feedback can represent more than a ground short
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Generic OBD-II
P27F2
Range-position circuit high is not a request for a higher gear
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Generic OBD-II
P27F3
Clutch B Temperature Too High
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Generic OBD-II
P27F4
Gear Shift Lock Solenoid/Actuator A Performance/Stuck On
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Generic OBD-II
P27F5
Gear Shift Lock Solenoid/Actuator A Stuck Off
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Generic OBD-II
P2800
Transmission Range Sensor B Circuit (PRNDL Input)
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Generic OBD-II
P2801
Range sensor B frequency must be checked separately from its position duty cycle
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Generic OBD-II
P2802
Internal transmission range sensor B has a low PWM-circuit signal
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Generic OBD-II
P2803
Range sensor B signal is high from a power short or an open path
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Generic OBD-II
P2804
Confirm Ford’s general B-circuit classification before assuming intermittency
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Generic OBD-II
P2805
Independent range-sensor channels disagree after duty-cycle adjustment
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Generic OBD-II
P2806
Transmission Range Sensor Alignment
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Generic OBD-II
P2807
Pressure Control Solenoid G
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Generic OBD-II
P2808
A differential valve stuck-off diagnosis combines pressure and current-profile tests
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Generic OBD-II
P2809
Differential valve stuck-on requires pressure despite a zero-current command
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Generic OBD-II
P280A
Transmission Range Sensor A Circuit Not Learned
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Generic OBD-II
P280B
Transmission Range Sensor B Circuit Not Learned
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Generic OBD-II
P2810
Pressure Control Solenoid G Electrical
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Generic OBD-II
P2811
Pressure Control Solenoid G Intermittent
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Generic OBD-II
P2812
pressure-control solenoid G electrical circuit is open
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Generic OBD-II
P2813
Pressure Control Solenoid G Control Circuit Range/Performance
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Generic OBD-II
P2814
pressure-control solenoid G circuit shorted to ground
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Generic OBD-II
P2815
pressure-control solenoid G circuit shorted to supply
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Generic OBD-II
P2816
Pressure Control Solenoid H
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Generic OBD-II
P2817
GR10 torque-converter clutch fails to achieve commanded coupling
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Generic OBD-II
P2818
GR10 torque-converter clutch remains coupled when commanded off
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Generic OBD-II
P2819
Pressure Control Solenoid H Electrical
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Generic OBD-II
P281A
Pressure Control Solenoid H Intermittent
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Generic OBD-II
P281B
pressure-control solenoid H electrical control path is open
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Generic OBD-II
P281C
Pressure Control Solenoid H Control Circuit Range/Performance
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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.