P CODE FAMILY
Powertrain code references — Page 18.
Engine, transmission and powertrain diagnostic references. Exact vehicle and module context still matters.
Generic OBD-II
P06A8
Sensor Reference Voltage C Circuit Range/Performance
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Generic OBD-II
P06A9
Sensor Reference Voltage D Circuit Range/Performance
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Generic OBD-II
P06AA
Control Module Internal Temperature B Too High
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Generic OBD-II
P06AB
Control Module Internal Temperature Sensor B Circuit
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Generic OBD-II
P06AC
Control Module Internal Temperature Sensor B Range/Performance
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Generic OBD-II
P06AD
Control Module Internal Temperature Sensor B Circuit Low
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Generic OBD-II
P06AE
Control Module Internal Temperature Sensor B Circuit High
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Generic OBD-II
P06AF
Torque Management System - Forced Engine Shutdown
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Generic OBD-II
P06B0
Sensor Power Supply A Circuit/Open
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Generic OBD-II
P06B1
Sensor Power Supply A Circuit Low
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Generic OBD-II
P06B2
Sensor Power Supply A Circuit High
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Generic OBD-II
P06B3
Sensor Power Supply B Circuit/Open
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Generic OBD-II
P06B4
Sensor Power Supply B Circuit Low
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Generic OBD-II
P06B5
Sensor Power Supply B Circuit High
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Generic OBD-II
P06B6
Internal Control Module Knock/Combustion Vibration Sensor Processor 1 Performance
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Generic OBD-II
P06B7
Internal Control Module Knock/Combustion Vibration Sensor Processor 2 Performance
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Generic OBD-II
P06B8
Internal Control Module Non-Volatile Random Access Memory (NVRAM) Error
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Generic OBD-II
P06B9
Cylinder 1 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06BA
Cylinder 2 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06BB
Cylinder 3 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06BC
Cylinder 4 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06BD
Cylinder 5 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06BE
Cylinder 6 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06BF
Cylinder 7 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06C0
Cylinder 8 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06C1
Cylinder 9 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06C2
Cylinder 10 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06C3
Cylinder 11 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06C4
Cylinder 12 Glow Plug Circuit Range/Performance
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Generic OBD-II
P06C5
Cylinder 1 Glow Plug Incorrect
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Generic OBD-II
P06C6
Cylinder 2 Glow Plug Incorrect
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Generic OBD-II
P06C7
Cylinder 3 Glow Plug Incorrect
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Generic OBD-II
P06C8
Cylinder 4 Glow Plug Incorrect
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Generic OBD-II
P06C9
Cylinder 5 Glow Plug Incorrect
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Generic OBD-II
P06CA
Cylinder 6 Glow Plug Incorrect
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Generic OBD-II
P06CB
Cylinder 7 Glow Plug Incorrect
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Generic OBD-II
P06CC
Cylinder 8 Glow Plug Incorrect
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Generic OBD-II
P06CD
Cylinder 9 Glow Plug Incorrect
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Generic OBD-II
P06CE
Cylinder 10 Glow Plug Incorrect
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Generic OBD-II
P06CF
Cylinder 11 Glow Plug Incorrect
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Generic OBD-II
P06D0
Cylinder 12 Glow Plug Incorrect
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Generic OBD-II
P06D1
Internal Control Module Ignition Coil Control Performance
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Generic OBD-II
P06D2
Sensor Reference Voltage E Circuit/Open
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Generic OBD-II
P06D3
Sensor Reference Voltage E Circuit Low
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Generic OBD-II
P06D4
Sensor Reference Voltage E Circuit High
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Generic OBD-II
P06D5
Sensor Reference Voltage E Circuit Range/Performance
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Generic OBD-II
P06D6
Sensor Reference Voltage F Circuit/Open
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Generic OBD-II
P06D7
Sensor Reference Voltage F Circuit Low
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Generic OBD-II
P06D8
Sensor Reference Voltage F Circuit High
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Generic OBD-II
P06D9
Sensor Reference Voltage F Circuit Range/Performance
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Generic OBD-II
P06DA
Engine Oil Pressure Control Circuit/Open
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Generic OBD-II
P06DB
Engine Oil Pressure Control Circuit Low
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Generic OBD-II
P06DC
Engine Oil Pressure Control Circuit High
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Generic OBD-II
P06DD
Engine Oil Pressure Control Circuit Performance/Stuck Off
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Generic OBD-II
P06DE
Engine Oil Pressure Control Circuit Stuck On
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Generic OBD-II
P06DF
Glow Plug Control Module 1 Memory Checksum Error
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Generic OBD-II
P06E0
Cylinder 11 Glow Plug Control Circuit Low
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Generic OBD-II
P06E1
Cylinder 11 Glow Plug Control Circuit High
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Generic OBD-II
P06E2
Cylinder 12 Glow Plug Control Circuit Low
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Generic OBD-II
P06E3
Cylinder 12 Glow Plug Control Circuit High
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Generic OBD-II
P06E4
Control Module Wake-up Circuit Performance
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Generic OBD-II
P06E5
Glow Plug Control Module 1 Performance
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Generic OBD-II
P06E6
Sensor Power Supply C Circuit/Open
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Generic OBD-II
P06E7
Sensor Power Supply C Circuit Low
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Generic OBD-II
P06E8
Sensor Power Supply C Circuit High
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Generic OBD-II
P06E9
Engine Starter Performance
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Generic OBD-II
P06EA
NOx Sensor Processor Performance Bank 1 Sensor 1
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Generic OBD-II
P06EB
NOx Sensor Processor Performance Bank 1 Sensor 2
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Generic OBD-II
P06EC
Fuel Injector Control Module Requested MIL Illumination
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Generic OBD-II
P06ED
Engine RPM Output Circuit Low
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Generic OBD-II
P06EE
Engine RPM Output Circuit High
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Generic OBD-II
P06EF
Engine Restart Performance
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Generic OBD-II
P06F0
Reductant Control Module Internal Temperature Sensor Circuit
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Generic OBD-II
P06F1
Reductant Control Module Internal Temperature Sensor Range/Performance
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Generic OBD-II
P06F2
Reductant Control Module Internal Temperature Sensor Circuit Low
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Generic OBD-II
P06F3
Reductant Control Module Internal Temperature Sensor Circuit High
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Generic OBD-II
P06F4
Stop-Start Mode Lamp Control Circuit
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Generic OBD-II
P06F5
Glow Plug Control Module 2
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Generic OBD-II
P06F6
Glow Plug Control Module 2 Control Circuit/Open
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Generic OBD-II
P06F7
Glow Plug Control Module 2 Control Circuit Low
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Generic OBD-II
P06F8
Glow Plug Control Module 2 Control Circuit High
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Generic OBD-II
P06F9
Glow Plug Control Module 2 System Voltage
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Generic OBD-II
P06FA
Glow Plug Control Module 2 Performance
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Generic OBD-II
P06FB
Glow Plug Control Module 2 Memory Checksum Error
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Generic OBD-II
P06FC
Glow Plug Control Module 2 to PCM Communication Circuit
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Generic OBD-II
P06FD
Glow Plug Control Module 2 to PCM Communication Circuit Range/Performance
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Generic OBD-II
P06FE
Cold Start Diesel Intake Air Flow Control Performance
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Generic OBD-II
P06FF
Economy Mode Lamp Control Circuit
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Generic OBD-II
P0700
Transmission Control System (MIL Request)
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Generic OBD-II
P0701
Transmission Control System Range/Performance
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Generic OBD-II
P0702
Transmission Control System Electrical
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Generic OBD-II
P0703
Brake Switch B Circuit
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Generic OBD-II
P0704
Clutch Switch Input Circuit
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Generic OBD-II
P0705
Transmission Range Sensor A Circuit (PRNDL Input)
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Generic OBD-II
P0706
Transmission Range Sensor A Circuit Range/Performance
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Generic OBD-II
P0707
Transmission Range Sensor A Circuit Low
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Generic OBD-II
P0708
Transmission Range Sensor A Circuit High
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Generic OBD-II
P0709
Transmission Range Sensor A Circuit Intermittent
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Generic OBD-II
P070A
Transmission Fluid Level Sensor Circuit
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Generic OBD-II
P070B
Transmission Fluid Level Sensor 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.