MANUFACTURER REFERENCE
Generic OBD-II code references — Page 71.
Read the source definition and confirm the exact vehicle, reporting module and diagnostic procedure.
Generic OBD-II
P2B5C
low supply at the coolant valve motor driver
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Generic OBD-II
P2B5D
Engine Coolant Flow Control Valve Position Sensor Circuit
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Generic OBD-II
P2B5E
coolant valve position data below its SENT range
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Generic OBD-II
P2B5F
coolant valve position data above its SENT range
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Generic OBD-II
P2B60
coolant valve position fails to follow a settled request
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Generic OBD-II
P2B61
Coolant valve needs high drive but does not reach its position
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Generic OBD-II
P2B62
Pump supply-voltage status is separate from a low output circuit
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Generic OBD-II
P2B63
An actuator-stuck report should not be reduced to an open circuit
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Generic OBD-II
P2B64
Pump controller temperature is different from coolant temperature
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Generic OBD-II
P2B65
An overspeed or dry-run classification is not direct proof of trapped air
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Generic OBD-II
P2B66
Coolant Pump D Control Circuit/Open
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Generic OBD-II
P2B67
Coolant Pump D Control Circuit Low
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Generic OBD-II
P2B68
Coolant Pump D Control Circuit High
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Generic OBD-II
P2B69
Coolant Pump D Supply Voltage Circuit
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Generic OBD-II
P2B6A
Coolant Pump D Stuck/Stalled
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Generic OBD-II
P2B6B
Coolant Pump D Control Module Overtemperature
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Generic OBD-II
P2B6C
Coolant Pump D Overspeed/Air in System
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Generic OBD-II
P2B6D
Engine Coolant Flow Control Valve Position Sensor Circuit Intermittent/Erratic
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Generic OBD-II
P2B6E
Turbocharger/Supercharger A Temperature Sensor Circuit
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Generic OBD-II
P2B6F
Turbocharger/Supercharger A Temperature Sensor Circuit Low
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Generic OBD-II
P2B70
Turbocharger/Supercharger A Temperature Sensor Circuit High
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Generic OBD-II
P2B71
Turbocharger/Supercharger A Temperature Sensor Circuit Circuit Range/Performance
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Generic OBD-II
P2B72
Coolant Heater A Control Circuit/Open
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Generic OBD-II
P2B73
Coolant Heater A Control Circuit Low
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Generic OBD-II
P2B74
Coolant Heater A Control Circuit High
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Generic OBD-II
P2B75
Coolant Heater A Control Circuit Performance
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Generic OBD-II
P2B76
Coolant Heater B Control Circuit/Open
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Generic OBD-II
P2B77
Coolant Heater B Control Circuit Low
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Generic OBD-II
P2B78
Coolant Heater B Control Circuit High
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Generic OBD-II
P2B79
Coolant Heater B Control Circuit Performance
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Generic OBD-II
P2B7A
EVAP System Pressure Sensor/Switch C Circuit
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Generic OBD-II
P2B7B
EVAP System Pressure Sensor/Switch C Circuit Range/Performance
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Generic OBD-II
P2B7C
EVAP System Pressure Sensor/Switch C Circuit Low
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Generic OBD-II
P2B7D
EVAP System Pressure Sensor/Switch C Circuit High
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Generic OBD-II
P2B7E
EVAP System Pressure Sensor/Switch C Circuit Intermittent
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Generic OBD-II
P2B7F
Turbocharger/Supercharger Boost Control Module A Calibration Not Learned/Programmed
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Generic OBD-II
P2B80
Turbocharger/Supercharger Boost Control Module B Calibration Not Learned/Programmed
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Generic OBD-II
P2B81
A SENT status problem in bank 1 wastegate feedback
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Generic OBD-II
P2B82
Bank 2 wastegate position data with invalid SENT status
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Generic OBD-II
P2B83
charge-air cooler pump speed above its monitored range
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Generic OBD-II
P2B84
understanding the pump underspeed monitor without misusing its threshold
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Generic OBD-II
P2B85
Coolant pump underspeed is a sustained tracking deficit
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Generic OBD-II
P2B86
Coolant pump A runs faster than its stabilized command
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Generic OBD-II
P2B87
Coolant pump A reports speed below its requested operation
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Generic OBD-II
P2B88
Intake Air O2 Sensor Circuit Bank 1
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Generic OBD-II
P2B89
Intake Air O2 Sensor Circuit Low Voltage Bank 1
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Generic OBD-II
P2B8A
Intake Air O2 Sensor Circuit High Voltage Bank 1
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Generic OBD-II
P2B8B
Intake Air O2 Sensor Heater Control Circuit/Open Bank 1
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Generic OBD-II
P2B8C
Intake Air O2 Sensor Heater Control Circuit Range/Performance Bank 1
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Generic OBD-II
P2B8D
Intake Air O2 Sensor Heater Control Circuit Low Bank 1
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Generic OBD-II
P2B8E
Intake Air O2 Sensor Heater Control Circuit High Bank 1
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Generic OBD-II
P2B8F
Turbocharger/Supercharger B Temperature Sensor Circuit
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Generic OBD-II
P2B90
Turbocharger/Supercharger B Temperature Sensor Circuit Low
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Generic OBD-II
P2B91
Turbocharger/Supercharger B Temperature Sensor Circuit High
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Generic OBD-II
P2B92
Turbocharger/Supercharger B Temperature Sensor Circuit Circuit Range/Performance
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Generic OBD-II
P2B93
Bank 1 wastegate feedback outside its learned closed-stop band
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Generic OBD-II
P2B94
Why the bank 2 wastegate closed-stop reference fails
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Generic OBD-II
P2B95
Cold-start multi-pulse fueling misses opening events across the engine
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Generic OBD-II
P2B96
Global injection-pulse monitoring detects missing opening signatures
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Generic OBD-II
P2B97
exhaust valve learned endpoints outside their allowed windows
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Generic OBD-II
P2B98
low supply to the exhaust pressure valve motor
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Generic OBD-II
P2B99
exhaust valve H-bridge temperature above its limit
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Generic OBD-II
P2B9A
Reductant Quality Sensor Circuit Intermittent/Erratic
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Generic OBD-II
P2B9B
Vehicle Conditions Incorrect for Particulate Matter Sensor Regeneration
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Generic OBD-II
P2B9C
Pump A actuator-stuck status is narrower than a cooling-system diagnosis
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Generic OBD-II
P2B9D
Pump A supply status cannot be inferred from one battery reading
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Generic OBD-II
P2B9E
A pump A thermal report does not directly measure engine overheating
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Generic OBD-II
P2B9F
An underspeed report needs a command relationship and correct pump identity
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Generic OBD-II
P2BA0
A pump underspeed label must be read through the reported-speed format
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Generic OBD-II
P2BA1
Coolant Pump D Underspeed
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Generic OBD-II
P2BA2
The cited pump-stalled row actually checks speed while commanded off
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Generic OBD-II
P2BA3
Starter-generator belt performance inferred from speed ratio
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Generic OBD-II
P2BA4
Catalyst Feedgas Performance
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Generic OBD-II
P2BA5
Particulate Filter Feedgas Performance
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Generic OBD-II
P2BA6
NOx Exceedance - SCR NOx Catalyst Performance
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Generic OBD-II
P2BA7
NOx Exceedence - Empty Reagent Tank
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Generic OBD-II
P2BA8
NOx Exceedence - Interruption of Reagent Dosing Activity
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Generic OBD-II
P2BA9
NOx Exceedence - Insufficient Reagent Quality
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Generic OBD-II
P2BAA
NOx Exceedence - Low Reagent Consumption
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Generic OBD-II
P2BAB
NOx Exceedence - Incorrect EGR Flow
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Generic OBD-II
P2BAC
NOx Exceedence - Deactivation of EGR
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Generic OBD-II
P2BAD
Duramax fluid-quality messages and the difference between a failed and unfinished test
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Generic OBD-II
P2BAE
NOx Exceedence - NOx control monitoring system
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Generic OBD-II
P2BAF
Compass diesel inducement warning linked to a BCM software version
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Generic OBD-II
P2BB0
Alternative Fuel Consumption Too Low
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Generic OBD-II
P2BB1
Alternative Fuel Consumption Too High
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Generic OBD-II
P2BB2
Alternative Fuel Tank Empty
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Generic OBD-II
P2BB3
Fuel Pump Secondary Circuit Performance
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Generic OBD-II
P2BB4
Engine Coolant Temperature Sensor 4 Circuit Intermittent/Erratic
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Generic OBD-II
P2BB5
Sensor 5 erratic temperature is a rate-of-change judgment
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Generic OBD-II
P2BB6
Engine Coolant Temperature Sensor 6 Circuit
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Generic OBD-II
P2BB7
Engine Coolant Temperature Sensor 6 Circuit Range/Performance
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Generic OBD-II
P2BB8
Coolant sensor 6 circuit low follows a logical-to-input mapping
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Generic OBD-II
P2BB9
Coolant sensor 6 circuit high has contradictory assignment wording
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Generic OBD-II
P2BBA
Sensor 6’s implausible temperature jump uses its own response model
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Generic OBD-II
P2BBB
Turbocharger/Supercharger Bypass Valve A Position Sensor Circuit
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Generic OBD-II
P2BBC
Air bypass valve position circuit below its signal range
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Generic OBD-II
P2BBD
Air bypass position signal high, including open-circuit causes
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Generic OBD-II
P2BBE
Turbocharger/Supercharger Bypass Valve A Position Exceeded Learning Limit
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Generic OBD-II
P2BBF
Turbocharger/Supercharger Bypass Valve A Supply Voltage Low
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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.