THE CODE DIRECTORY
Diagnostic code references — Page 90.
Browse canonical reference entries. Each definition keeps its own source and vehicle-applicability limits.
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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Generic OBD-II
P281D
why solenoid H circuit-low can also mean an open circuit
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Generic OBD-II
P281E
solenoid H voltage-high diagnosis depends on valve mapping
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Generic OBD-II
P281F
Pressure Control Solenoid J
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Generic OBD-II
P2820
a documented park-lock valve stuck-off monitor
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Generic OBD-II
P2821
how a park-lock valve is diagnosed hydraulically stuck on
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Generic OBD-II
P2822
Pressure Control Solenoid J Electrical
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Generic OBD-II
P2823
Pressure Control Solenoid J Intermittent
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Generic OBD-II
P2824
T93 default-disable valve open-circuit detection
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Generic OBD-II
P2825
Pressure Control Solenoid J Control Circuit Range/Performance
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Generic OBD-II
P2826
solenoid J circuit-low and the T87a open-circuit exception
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Generic OBD-II
P2827
what solenoid J circuit-high actually identifies
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Generic OBD-II
P2828
Pressure Control Solenoid K
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Generic OBD-II
P2829
Selector pilot stuck-off is distinguished from a selector spool fault
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Generic OBD-II
P282A
Selector pilot stuck-on needs both wrong-route movement and a failed profile
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Generic OBD-II
P282B
Pressure Control Solenoid K Electrical
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Generic OBD-II
P282C
Pressure Control Solenoid K Intermittent
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Generic OBD-II
P282D
Selector pilot open-load is an off-state electrical check
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Generic OBD-II
P282E
Pressure Control Solenoid K Control Circuit Range/Performance
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Generic OBD-II
P282F
Selector pilot circuit low uses driver evidence, not rod movement
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Generic OBD-II
P2830
Selector pilot high can originate in a shutdown cross-output test
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Generic OBD-II
P2831
Shift Fork A Position Circuit
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Generic OBD-II
P2832
Rod-one plausibility is checked against speed evidence and alternate actuation
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Generic OBD-II
P2833
Rod-one circuit low includes missing pulses or an undersized duty cycle
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Generic OBD-II
P2834
Rod-one circuit high can be a missing-pulse or duty-cycle fault
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Generic OBD-II
P2835
Rod-one intermittent code checks digital frequency, not just dropouts
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Generic OBD-II
P2836
Shift Fork B Position Circuit
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Generic OBD-II
P2837
Rod-two consistency uses independent gear evidence before blaming position
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Generic OBD-II
P2838
Rod-two electrical low is about pulse behavior, not fork travel
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Generic OBD-II
P2839
Rod-two high requires pulse-loss or excessive-duty evidence
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Generic OBD-II
P283A
Rod-two intermittent feedback is monitored through its frequency
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Generic OBD-II
P283B
Shift Fork C Position Circuit
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Generic OBD-II
P283C
Rod-three consistency is tied to the even-clutch speed references
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Generic OBD-II
P283D
Rod-three circuit low must be read with its reference-supply status
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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.