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DTC Code Glossary

Look up any of the 8,033 OBD-II diagnostic trouble codes in our database — what it means, and how we can permanently remove it from your ECU.

All P B C U
P0450
EVAP System Pressure Sensor/Switch A Circuit
P0451
EVAP System Pressure Sensor/Switch A Circuit Range/Performance
P0452
EVAP System Pressure Sensor/Switch A Circuit Low
P0453
EVAP System Pressure Sensor/Switch A Circuit High
P0454
EVAP System Pressure Sensor/Switch A Circuit Intermittent
P0455
EVAP System Leak Detected - Large Leak
P0456
EVAP System Leak Detected (very small leak)
P0457
EVAP System Leak Detected (fuel cap loose/off)
P0458
EVAP System Purge Control Valve A Circuit Low
P0459
EVAP System Purge Control Valve A Circuit High
P045A
EGR B Control Circuit
P045B
EGR B Control Circuit Range/Performance
P045C
EGR B Control Circuit Low
P045D
EGR B Control Circuit High
P045E
EGR B Control Stuck Open
P045F
EGR B Control Stuck Closed
P0460
Fuel Level Sensor A Circuit
P0461
Fuel Level Sensor A Circuit Range/Performance
P0462
Fuel Level Sensor A Circuit Low
P0463
Fuel Level Sensor A Circuit High
P0464
Fuel Level Sensor A Circuit Intermittent
P0465
EVAP Purge Flow Sensor Circuit
P0466
EVAP Purge Flow Sensor Circuit Range/Performance
P0467
EVAP Purge Flow Sensor Circuit Low
P0468
EVAP Purge Flow Sensor Circuit High
P0469
EVAP Purge Flow Sensor Circuit Intermittent
P046A
Catalyst Temperature Sensor 1/2 Correlation Bank 1
P046B
Catalyst Temperature Sensor 1/2 Correlation Bank 2
P046C
EGR Sensor A Circuit Range/Performance
P046D
EGR Sensor A Circuit Intermittent/Erratic
P046E
EGR Sensor B Circuit Range/Performance
P046F
EGR Sensor B Circuit Intermittent/Erratic
P0470
Exhaust Pressure Sensor A Circuit
P0471
Exhaust Pressure Sensor A Circuit Range/Performance
P0472
Exhaust Pressure Sensor A Circuit Low
P0473
Exhaust Pressure Sensor A Circuit High
P0474
Exhaust Pressure Sensor A Circuit Intermittent/Erratic
P0475
Exhaust Pressure Control Valve A
P0476
Exhaust Pressure Control Valve A Range/Performance
P0477
Exhaust Pressure Control Valve A Low
P0478
Exhaust Pressure Control Valve A High
P0479
Exhaust Pressure Control Valve A Intermittent
P047A
Exhaust Pressure Sensor B Circuit
P047B
Exhaust Pressure Sensor B Circuit Range/Performance
P047C
Exhaust Pressure Sensor B Circuit Low
P047D
Exhaust Pressure Sensor B Circuit High
P047E
Exhaust Pressure Sensor B Circuit Intermittent/Erratic
P047F
Exhaust Pressure Control Valve A Stuck Open
P0480
Fan 1 Control Circuit
P0481
Fan 2 Control Circuit
P0482
Fan 3 Control Circuit
P0483
Fan Rationality Check
P0484
Fan Circuit Current High
P0485
Fan Power/Ground Circuit
P0486
EGR Sensor B Circuit
P0487
EGR Throttle Control Circuit A /Open
P0488
EGR Throttle Control Circuit A Range/Performance
P0489
EGR A Control Circuit Low
P048A
Exhaust Pressure Control Valve A Stuck Closed
P048B
Exhaust Pressure Control Valve A Position Sensor/Switch Circuit
P048C
Exhaust Pressure Control Valve A Position Sensor/Switch Circuit Range/Performance
P048D
Exhaust Pressure Control Valve A Position Sensor/Switch Circuit Low
P048E
Exhaust Pressure Control Valve A Position Sensor/Switch Circuit High
P048F
Exhaust Pressure Control Valve A Position Sensor/Switch Circuit Intermittent/Erratic
P0490
EGR A Control Circuit High
P0491
AIR System Insufficient Flow Bank 1
P0492
AIR System Insufficient Flow Bank 2
P0493
Fan Overspeed
P0494
Fan 1 Underspeed
P0495
Fan 1 Overspeed
P0496
EVAP System High Purge Flow
P0497
EVAP System Low Purge Flow
P0498
EVAP System Vent Valve Control Circuit Low
P0499
EVAP System Vent Valve Control Circuit High
P049A
EGR B Flow
P049B
EGR B Flow Insufficient Detected
P049C
EGR B Flow Excessive Detected
P049D
EGR A Control Position Exceeded Learning Limit
P049E
EGR B Control Position Exceeded Learning Limit
P049F
Exhaust Pressure Control Valve B
P04A0
Exhaust Pressure Control Valve B Range/Performance
P04A1
Exhaust Pressure Control Valve B Low
P04A2
Exhaust Pressure Control Valve B High
P04A3
Exhaust Pressure Control Valve B Intermittent
P04A4
Exhaust Pressure Control Valve B Stuck Open
P04A5
Exhaust Pressure Control Valve B Stuck Closed
P04A6
Exhaust Pressure Control Valve B Position Sensor/Switch Circuit
P04A7
Exhaust Pressure Control Valve B Position Sensor/Switch Circuit Range/Performance
P04A8
Exhaust Pressure Control Valve B Position Sensor/Switch Circuit Low
P04A9
Exhaust Pressure Control Valve B Position Sensor/Switch Circuit High
P04AA
Exhaust Pressure Control Valve B Position Sensor/Switch Circuit Intermittent/Erratic
P04AB
EVAP System Purge Control Valve B Circuit/Open
P04AC
EVAP System Purge Control Valve B Circuit Low
P04AD
EVAP System Purge Control Valve B Circuit High
P04AE
EVAP System Purge Control Valve B Performance/Stuck Open
P04AF
EVAP System Purge Control Valve B Stuck Closed
P04B0
Refueling Vapor Control Valve Circuit/Open
P04B1
Refueling Vapor Control Valve Circuit Low
P04B2
Refueling Vapor Control Valve Circuit High
P04B3
Refueling Vapor Control Valve Stuck Performance/Stuck Open