MANUFACTURER REFERENCE
Generic OBD-II code references — Page 59.
Read the source definition and confirm the exact vehicle, reporting module and diagnostic procedure.
Generic OBD-II
P2595
Bank-two turbo-speed low requires an unchanging pulse signal
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Generic OBD-II
P2596
Separating a static high turbo-speed input from valid pulses
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Generic OBD-II
P2597
Turbocharger Speed Sensor B Circuit Intermittent
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Generic OBD-II
P2598
Turbo position remains low relative to its command
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Generic OBD-II
P2599
turbo vanes fail to return to their default open position
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Generic OBD-II
P259A
Turbocharger Boost Control Position Sensor B Performance - Stuck Low
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Generic OBD-II
P259B
Turbocharger Boost Control Position Sensor B Performance - Stuck High
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Generic OBD-II
P259C
Excessive Time To Enter Closed Loop Turbocharger A Boost Control
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Generic OBD-II
P259D
Excessive Time To Enter Closed Loop Turbocharger B Boost Control
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Generic OBD-II
P259E
A low boost-control limit uses a large sustained pressure error
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Generic OBD-II
P259F
High boost-control limit means actual boost exceeds the target
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Generic OBD-II
P25A0
Turbocharger B Boost Control Position At Low Limit
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Generic OBD-II
P25A1
Turbocharger B Boost Control Position At High Limit
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Generic OBD-II
P25A2
A brake-module MIL request points to another controller’s evidence
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Generic OBD-II
P25A3
Engine Hood Open
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Generic OBD-II
P25A4
Fuel Mode Select Switch Circuit
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Generic OBD-II
P25A5
Fuel Mode Select Switch Performance
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Generic OBD-II
P25A6
Fuel Mode Select Switch Circuit Low
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Generic OBD-II
P25A7
Fuel Mode Select Switch Circuit High
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Generic OBD-II
P25A8
Fuel Mode Select Switch Circuit Intermittent/Erratic
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Generic OBD-II
P25A9
Piston Cooling Oil Control Circuit/Open
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Generic OBD-II
P25AA
Piston Cooling Oil Control Circuit Low
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Generic OBD-II
P25AB
Piston Cooling Oil Control Circuit High
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Generic OBD-II
P25AC
Piston Cooling Oil Control Circuit Performance/Stuck Off
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Generic OBD-II
P25AD
Piston Cooling Oil Control Circuit Stuck On
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Generic OBD-II
P25AE
Piston Cooling Oil Pressure Too Low
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Generic OBD-II
P25AF
Coolant switching valve performance inferred from pressure changes
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Generic OBD-II
P25B0
Fuel-level sensor A can be stuck even when its electrical value looks plausible
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Generic OBD-II
P25B1
Fuel-level sensor B stuck monitoring uses consumption history
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Generic OBD-II
P25B2
An A-or-B stuck result does not identify which fuel-level sender failed
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Generic OBD-II
P25B3
Why wastegate A stuck-open depends on position normalization
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Generic OBD-II
P25B4
Wastegate A stuck-closed is a timed control disagreement
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Generic OBD-II
P25B5
Reading bank-two wastegate stuck-open without reversing the scale
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Generic OBD-II
P25B6
How the controller classifies a bank-two wastegate closed-side jam
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Generic OBD-II
P25B7
Auxiliary Ignition Switch On/Start Position Circuit
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Generic OBD-II
P25B8
Auxiliary Ignition Switch On/Start Position Circuit Low
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Generic OBD-II
P25B9
Auxiliary Ignition Switch On/Start Position Circuit High
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Generic OBD-II
P25BA
Regeneration Control Switch Circuit/Open
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Generic OBD-II
P25BB
Regeneration Control Switch Circuit Low
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Generic OBD-II
P25BC
Regeneration Control Switch Circuit High
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Generic OBD-II
P25BD
engine overspeed detected without commanded fuel delivery
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Generic OBD-II
P25BE
Alternative Fuel Disable Control Circuit/Open
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Generic OBD-II
P25BF
Alternative Fuel Disable Control Circuit High
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Generic OBD-II
P25C0
Alternative Fuel Disable Control Circuit Low
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Generic OBD-II
P25C1
Alternative Fuel Disable Signal Circuit
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Generic OBD-II
P25C2
Alternative Fuel Disable Signal Circuit High
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Generic OBD-II
P25C3
Alternative Fuel Disable Signal Circuit Low
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Generic OBD-II
P25C4
Brake Booster Temperature Sensor A Circuit
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Generic OBD-II
P25C5
Brake-unit internal temperature sensor low-voltage subcode
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Generic OBD-II
P25C6
Brake-booster temperature low is an electrical channel-one finding
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Generic OBD-II
P25C7
A high booster temperature input does not prove overheating
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Generic OBD-II
P25C8
Brake Booster Temperature Sensor A Circuit Intermittent/Erratic
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Generic OBD-II
P25C9
The brake controller has requested an emissions warning
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Generic OBD-II
P25CA
bank-one cam lock-pin open-circuit feedback needs command context
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Generic OBD-II
P25CB
bank-one cam lock-pin short-to-ground is an electrical branch
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Generic OBD-II
P25CC
Intake camshaft park-lock driver remains high when switched on
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Generic OBD-II
P25CD
Bank 2 camshaft park-lock circuit is classified open
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Generic OBD-II
P25CE
Bank 2 camshaft park-lock circuit reads low with the driver off
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Generic OBD-II
P25CF
bank-two cam lock-pin feedback stays high when commanded on
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Generic OBD-II
P25D0
Exhaust Camshaft Actuator Park Lock Control Circuit/Open Bank 1
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Generic OBD-II
P25D1
Exhaust Camshaft Actuator Park Lock Control Circuit Low Bank 1
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Generic OBD-II
P25D2
Exhaust Camshaft Actuator Park Lock Control Circuit High Bank 1
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Generic OBD-II
P25D3
Exhaust Camshaft Actuator Park Lock Control Circuit/Open Bank 2
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Generic OBD-II
P25D4
Exhaust Camshaft Actuator Park Lock Control Circuit Low Bank 2
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Generic OBD-II
P25D5
Exhaust Camshaft Actuator Park Lock Control Circuit High Bank 2
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Generic OBD-II
P25D6
Exhaust Heat Exchanger Exhaust Bypass Valve A Position Sensor Stop Performance
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Generic OBD-II
P25D7
Fuel Level Sensor C Circuit
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Generic OBD-II
P25D8
Fuel Level Sensor C Performance
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Generic OBD-II
P25D9
Fuel Level Sensor C Circuit Low
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Generic OBD-II
P25DA
Fuel Level Sensor C Circuit High
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Generic OBD-II
P25DB
Fuel Level Sensor C Circuit Intermittent
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Generic OBD-II
P25DC
Fuel Level Sensor C Stuck
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Generic OBD-II
P25DD
A Camshaft Position - Stuck In Locked Position Bank 1
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Generic OBD-II
P25DE
A Camshaft Position - Unable to Achieve Locked Position Bank 1
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Generic OBD-II
P25DF
A Camshaft Position Control Performance Bank 1
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Generic OBD-II
P25E0
A Camshaft Position - Stuck In Locked Position Bank 2
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Generic OBD-II
P25E1
A Camshaft Position - Unable to Achieve Locked Position Bank 2
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Generic OBD-II
P25E2
A Camshaft Position Control Performance Bank 2
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Generic OBD-II
P25E3
B Camshaft Position - Stuck In Locked Position Bank 1
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Generic OBD-II
P25E4
B Camshaft Position - Unable to Achieve Locked Position Bank 1
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Generic OBD-II
P25E5
B Camshaft Position Control Performance Bank 1
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Generic OBD-II
P25E6
B Camshaft Position - Stuck In Locked Position Bank 2
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Generic OBD-II
P25E7
B Camshaft Position - Unable to Achieve Locked Position Bank 2
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Generic OBD-II
P25E8
B Camshaft Position Control Performance Bank 2
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Generic OBD-II
P25E9
Supercharger Disconnect Clutch Stuck Open
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Generic OBD-II
P25EA
Supercharger Disconnect Clutch Stuck Closed
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Generic OBD-II
P25EB
Supercharger Disconnect Clutch Circuit Range/Performance
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Generic OBD-II
P25EC
Supercharger clutch control circuit low
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Generic OBD-II
P25ED
Supercharger clutch control circuit high
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Generic OBD-II
P25EE
Vacuum Pump Control Circuit B/Open
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Generic OBD-II
P25EF
Vacuum Pump Control Circuit B Range/Performance
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Generic OBD-II
P25F0
Vacuum Pump Control Circuit B Low
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Generic OBD-II
P25F1
Vacuum Pump Control Circuit B High
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Generic OBD-II
P25F2
Turbocharger/Supercharger Boost Sensor C Circuit
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Generic OBD-II
P25F3
Turbocharger/Supercharger Boost Sensor C Circuit Range/Performance
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Generic OBD-II
P25F4
Turbocharger/Supercharger Boost Sensor C Circuit Low
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Generic OBD-II
P25F5
Turbocharger/Supercharger Boost Sensor C Circuit High
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Generic OBD-II
P25F6
AIR System B
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Generic OBD-II
P25F7
AIR System B Incorrect Flow Detected
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Generic OBD-II
P25F8
Turbocharger/Supercharger Bypass Valve C Control Circuit
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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.