C0000 – Vehicle Speed Information Circuit Malfunction
C0035 – Left Front Wheel Speed Circuit Malfunction
C0040 – Right Front Wheel Speed Circuit Malfunction
C0041 – Right Front Wheel Circuit Range/Performance (EBCM)
C0045 – Left Rear Wheel Speed Circuit Malfunction
C0046 – Left Rear Wheel Speed Sensor Circuit Range/Performance (EBCM)
C0050 – Right Rear Wheel Speed Circuit Malfunction
C0051 – LF Wheel Speed Sensor Circuit Range/Performance (EBCM)
C0060 – Left Front ABS Solenoid #1 Circuit Malfunction
C0065 – Left Front ABS Solenoid #2 Circuit Malfunction
C0070 – Right Front ABS Solenoid #1 Circuit Malfunction
C0075 – Right Front ABS Solenoid #2 Circuit Malfunction
C0080 – Left Rear ABS Solenoid #1 Circuit Malfunction
C0085 – Left Rear ABS Solenoid #2 Circuit Malfunction
C0090 – Right Rear ABS Solenoid #1 Circuit Malfunction
C0095 – Right Rear ABS Solenoid #2 Circuit Malfunction
C0110 – Pump Motor Circuit Malfunction
C0121 – Valve Relay Circuit Malfunction
C0128 – Low Brake Fluid Circuit Low
C0141 – Left TCS Solenoid #1 Circuit Malfunction
C0146 – Left TCS Solenoid #2 Circuit Malfunction
C0151 – Right TCS Solenoid #1 Circuit Malfunction
C0156 – Right TCS Solenoid #2 Circuit Malfunction
C0161 – ABS/TCS Brake Switch Circuit Malfunction
C0221 – Right Front Wheel Speed Sensor Circuit Open
C0222 – Right Front Wheel Speed Signal Missing
C0223 – Right Front Wheel Speed Signal Erratic
C0225 – Left Front Wheel Speed Sensor Circuit Open
C0226 – Left Front Wheel Speed Signal Missing
C0227 – Left Front Wheel Speed Signal Erratic
C0229 – Drop Out of Front Wheel Speed Signals
C0235 – Rear Wheel Speed Signal Circuit Open
C0236 – Rear Wheel Speed Signal Circuit Missing
C0237 – Rear Wheel Speed Signal Erratic
C0238 – Wheel Speed Mismatch
C0241 – EBCM Control Valve Circuit
C0245 – Wheel Speed Sensor Frequency Error
C0254 – EBCM Control Valve Circuit
C0265 – EBCM Relay Circuit
C0266 – EBCM Relay Circuit
C0267 – Pump Motor Circuit Open/Shorted
C0268 – Pump Motor Circuit Open/Shorted
C0269 – Excessive Dump/Isolation Time
C0271 – EBCM Malfunction
C0272 – EBCM Malfunction
C0273 – EBCM Malfunction
C0274 – Excessive Dump/Isolation Time
C0279 – Powertrain Configuration Not Valid
C0281 – Brake Switch Circuit
C0283 – Traction Switch Shorted to Ground
C0284 – EBCM Malfunction
C0286 – ABS Indicator Lamp Circuit Shorted to B+
C0287 – Delivered Torque Circuit
C0288 – Brake Warning Lamp Circuit Shorted to B+
C0290 – Lost Communications With PCM
C0292 – Lost Communications With PCM
C0291 – Lost Communications With BCM
C0297 – Powertrain Configuration Data Not Received
C0298 – Powertrain Indicated Traction Control Malfunction
C0300 – Rear Speed Sensor Malfunction
C0305 – Front Speed Sensor Malfunction
C0306 – Motor A or B Circuit
C0308 – Motor A/B Circuit Low
C0309 – Motor A/B Circuit High
C0310 – Motor A/B Circuit Open
C0315 – Motor Ground Circuit Open
C0321 – Transfer Case Lock Circuit
C0323 – T-Case Lock Circuit Low
C0324 – T-Case Lock Circuit High
C0327 – Encoder Circuit Malfunction
C0357 – Park Switch Circuit High
C0359 – Four Wheel Drive Low Range (4LO) Discrete Output Circuit
C0362 – 4LO Discrete Output Circuit High
C0367 – Front Axle Control Circuit High
C0374 – General System Malfunction
C0376 – Front/Rear Shaft Speed Mismatch
C0379 – Front Axle System
C0387 – Unable to Perform Shift
C0472 – Steering Handwheel Speed Sensor Signal V Low
C0473 – Steering Handwheel Speed Sensor Signal V High
C0495 – EVO Tracking Error
C0498 – Steering Assist Control Actuator Feed Circuit Low
C0499 – Steering Assist Control Solenoid Feed Circuit High
C0503 – Steering Assist Control Solenoid Return Circuit Low
C0504 – Steering Assist Control Solenoid Return Circuit High
C0550 – ECU Malfunction – internal write / checksum malfunction
C0559 – EEPROM Checksum Error
C0563 – Calibration ROM Checksum Error
C0577 – Left Front Solenoid Circuit Low
C0578 – Left Front Solenoid Circuit High
C0579 – Left Front Solenoid Circuit Open
C0582 – Right Front Solenoid Circuit Low
C0583 – Right Front Solenoid Circuit High
C0584 – Right Front Solenoid Circuit Open
C0587 – Left Rear Solenoid Circuit Low
C0588 – Left Rear Solenoid Circuit High
C0589 – Left Rear Solenoid Circuit Open
C0592 – Right Rear Solenoid Circuit Low
C0593 – Right Rear Solenoid Circuit High
C0594 – Right Rear Solenoid Circuit Open
C0611 – VIN Information Error
C0615 – Left Front Position Sensor Malfunction
C0620 – Right Front Position Sensor Malfunction
C0625 – Left Rear Position Sensor Malfunction
C0628 – Level Control Position Sensor Circuit High
C0630 – Right Rear Position Sensor Malfunction
C0635 – Left Front Normal Force Circuit Malfunction
C0638 – Left Front Normal Force Circuit High
C0640 – Right Front Normal Force Circuit Malfunction
C0643 – Right Front Normal Force Circuit High
C0655 – Level Control Compressor Relay Malfunction
C0657 – Level Control Compressor Circuit Low
C0658 – Level Control Compressor Circuit High
C0660 – Level Control Exhaust Valve Circuit Malfunction
C0662 – Level Control Exhaust Valve Circuit Low
C0663 – Level Control Exhaust Valve Circuit High
C0665 – Chassis Pitch Signal Circuit
C0690 – Damper Control Relay Circuit Malfunction
C0691 – Damper Control Relay Circuit Range
C0693 – Damper Control Relay Circuit High
C0695 – Position Sensor Overcurrent (8 volt supply)
C0696 – Position Sensor Overcurrent (5 volt supply)
C0710 – Steering Position Signal Malfunction
C0750 – Tire Pressure Monitor (TPM) system sensor not transmitting
C0755 – Tire Pressure Monitor (TPM) system sensor not transmitting
C0760 – Tire Pressure Monitor (TPM) system sensor not transmitting
C0765 – Tire Pressure Monitor (TPM) system sensor not transmitting
C0800 – Device Power #1 Circuit Malfunction
C0896 – Electronic Suspension Control (ESC) voltage is outside the normal range of 9 to 15.5 volts

P0400

Exhaust Gas Recirculation Flow Malfunction

P0401

Exhaust Gas Recirculation Flow Insufficient Detected

P0402

Exhaust Gas Recirculation Flow Excessive Detected

P0403

Exhaust Gas Recirculation Circuit Malfunction

P0404

Exhaust Gas Recirculation Circuit Range/Performance

P0405

Exhaust Gas Recirculation Sensor A Circuit Low

P0406

Exhaust Gas Recirculation Sensor A Circuit High

P0407

Exhaust Gas Recirculation Sensor B Circuit Low

P0408

Exhaust Gas Recirculation Sensor B Circuit High

P0410

Secondary Air Injection System Malfunction

P0411

Secondary Air Injection System Incorrect Flow Detected

P0412

Secondary Air Injection System Switching Valve A Circuit Malfunction

P0413

Secondary Air Injection System Switching Valve A Circuit Open

P0414

Secondary Air Injection System Switching Valve A Circuit Shorted

P0415

Secondary Air Injection System Switching Valve B Circuit Malfunction

P0416

Secondary Air Injection System Switching Valve B Circuit Open

P0417

Secondary Air Injection System Switching Valve B Circuit Shorted

P0418

Secondary Air Injection System Relay “A” circuit Malfunction

P0419

Secondary Air Injection System Relay “B” Circuit Malfunction

P0420

Catalyst System Efficiency Below Threshold (Bank 1)

P0421

Warm Up Catalyst Efficiency Below Threshold (Bank 1)

P0422

Main Catalyst Efficiency Below Threshold (Bank 1)

P0423

Heated Catalyst Efficiency Below Threshold (Bank l)

P0424

Heated Catalyst Temperature Below Threshold (Bank 1)

P0430

Catalyst System Efficiency Below Threshold (Bank 2)

P0431

Warm Up Catalyst Efficiency Below Threshold (Bank 2)

P0432

Main Catalyst Efficiency Below Threshold (Bank 2)

P0433

Heated Catalyst Efficiency Below Threshold (Bank 2)

P0434

Heated Catalyst Temperature Below Threshold (Bank 2)

P0440

Evaporative Emission Control System Malfunction

P0441

Evaporative Emission Control System Incorrect Purge flow

P0442

Evaporative Emission Control System leak Detected (small leak)

P0443

Evaporative Emission Control System Purge Control Valve circuit Malfunction

P0444

Evaporative Emission Control System Purge Control Valve Circuit Open

P0445

Evaporative Emission Control System Purge Control Valve Circuit Shorted

P0446

Evaporative Emission Control System Vent Control Circuit Malfunction

P0447

Evaporative Emission Control System Vent Control Circuit Open

P0448

Evaporative Emission Control System Vent Control Circuit Shorted

P0449

Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction

P0450

Evaporative Emission Control System Pressure Sensor Malfunction

P0451

Evaporative Emission Control System Pressure Sensor Range/Performance

P0452

Evaporative Emission Control System Pressure Sensor Low Input

P0453

Evaporative Emission Control System Pressure Sensor High Input

P0454

Evaporative Emission Control System Pressure Sensor Intermittent

P0455

Evaporative Emission Control System Tank Detected (gross leak)

P0460

Fuel Level Sensor Circuit Malfunction

P0461

Fuel Level Sensor Circuit Range/Performance

P0462

Fuel Level Sensor Circuit Low Input

P0463

Fuel Level Sensor Circuit High Input

P0464

Fuel Level Sensor Circuit Intermittent

P0465

Purge Flow Sensor Circuit Malfunction

P0466

Purge Flow Sensor Circuit Range/Performance

P0467

Purge Flow Sensor Circuit Low Input

P0468

Purge Flow Sensor Circuit High Input

P0469

Purge Flow Sensor Circuit Intermittent

P0470

Exhaust Pressure Sensor Malfunction

P0471

Exhaust Pressure Sensor Range/Performance

P0472

Exhaust Pressure Sensor Low

P0473

Exhaust Pressure Sensor High

P0474

Exhaust Pressure Sensor Intermittent

P0475

Exhaust Pressure Control Valve Malfunction

P0476

Exhaust Pressure Control Valve Range/Performance

P0477

Exhaust Pressure Control Valve Low

P0478

Exhaust Pressure Control Valve High

P0479

Exhaust Pressure Control Valve Intermittent

P0480

Cooling Fan 1 Control Circuit Malfunction

P0481

Cooling Fan 2 Control Circuit Malfunction

P0482

Cooling Fan 3 Control Circuit Malfunction

P0483

Cooling Fan Rationality Check Malfunction

P0484

Cooling Fan Circuit Over Current

P0485

Cooling Fan Power/Ground Circuit Malfunction

P0486

Exhaust Gas Recirculation Sensor “B” Circuit

P0487

Exhaust Gas Recirculation Throttle Position Control Circuit

P0488

Exhaust Gas Recirculation Throttle Position Control Range/Performance

P0491

Secondary Air Injection System (Bank 1)

P0492

Secondary Air Injection System (Bank 2)

Mass Air Flow (MAF) Circuit Low Input

Description:

How does a P0102 code trigger the check engine light? The engine light will come on if the following concern is present:

The Mass Air Flow Sensor circuit is monitored by the powertrain control module (computer), for low voltage (which translates to low air flow) through the Comprehensive Component Monitor (CCM). With the key on and engine running, if the voltage drops below a minimum value this code will be set, causing the check engine light to illuminate.

Possible Causes:

MAF Sensor disconnected
MAF Sensor circuit open to computer
Vehicle Power circuit open to MAF Sensor
Power Ground circuit open to MAF Sensor
MAF Sensor Return circuit open to PCM
MAF Sensor circuit shorted to Ground
Intake air leak near MAF Sensor
Damaged MAF Sensor
Damaged computer

Diagnostic Help:

Refer to an appropriate manual for specification. If MAF Sensor voltage reading is below minimum limit with key on engine running then concern is a hard fault (present now). If all values are in spec proceed with intermittent diagnosis (refer to our “Intermittent Diagnosis Help” article through the “articles” link on the Navigation Bar). You may also use the “Get Help” link if you need specifications or have any other related questions.

P0400 Exhaust Gas Recirculation Flow
P0401 Exhaust Gas Recirculation Flow Insufficient Detected
P0402 Exhaust Gas Recirculation Flow Excessive Detected
P0403 Exhaust Gas Recirculation Control Circuit
P0404 Exhaust Gas Recirculation Control Circuit Range/Performance
P0405 Exhaust Gas Recirculation Sensor “A” Circuit Low
P0406 Exhaust Gas Recirculation Sensor “A” Circuit High
P0407 Exhaust Gas Recirculation Sensor “B” Circuit Low
P0408 Exhaust Gas Recirculation Sensor “B” Circuit High
P0409 Exhaust Gas Recirculation Sensor “A” Circuit

P0410 Secondary Air Injection System
P0411 Secondary Air Injection System Incorrect Flow Detected
P0412 Secondary Air Injection System Switching Valve “A” Circuit
P0413 Secondary Air Injection System Switching Valve “A” Circuit Open
P0414 Secondary Air Injection System Switching Valve “A” Circuit Shorted
P0415 Secondary Air Injection System Switching Valve “B” Circuit
P0416 Secondary Air Injection System Switching Valve “B’ Circuit Open
P0417 Secondary Air Injection System Switching Valve “B” Circuit Shorted
P0416 Secondary Air Injection System Relay “A” Circuit
P0419 Secondary Air injection System Relay “B” Circuit

P0420 Catalyst System Efficiency Below Threshold (Bank 1)
P0421 Warm Up Catalyst Efficiency Below Threshold (Bank 1)
P0422 Main Catalyst Efficiency Below Threshold (Bank 1)
P0423 Heated Catalyst Efficiency Below Threshold (Bank 1)
P0424 Heated Catalyst Temperature Below Threshold (Bank 1)

P0425 Catalyst Temperature Sensor (Bank 1)
P0426 Catalyst Temperature Sensor Range/Performance (Bank 1)
P0427 Catalyst Temperature Sensor Low Input (Bank 1)
P0428 Catalyst Temperature Sensor High Input (Bank 1)
P0429 Catalyst Heater Control Circuit (Bank 1)
P0430 Catalyst System Efficiency Below Threshold (Bank 2)
P0431 Warm Up Catalyst Efficiency Below Threshold (Bank 2)
P0432 Main Catalyst Efficiency Below Threshold (Bank 2)
P0433 Heated Catalyst Efficiency Below Threshold (Bank 2)
P0434 Heated Catalyst Temperature Below Threshold (Bank 2)
P0435 Catalyst Temperature Sensor (Bank 2)
P0436 Catalyst Temperature Sensor Range/Performance (Bank 2)
P0437 Catalyst Temperature Sensor Low Input (Bank 2)
P0438 Catalyst Temperature Sensor High Input (Bank 2)
P0439 Catalyst Heater Control Circuit (Bank 2)

P0440 Evaporative Emission Control System
P0441 Evaporative Emission Control System Incorrect Purge Flow
P0442 Evaporative Emission Control System Leak Detected (small leak)
P0443 Evaporative Emission Control System Purge Control Valve Circuit
P0444 Evaporative Emission Control System Purge Control Valve Circuit Open
P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted
P0446 Evaporative Emission Control System Vent Control Circuit
P0447 Evaporative Emission Control System Vent Control Circuit Open
P0448 Evaporative Emission Control System Vent Control Circuit Shorted
P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit
P0450 Evaporative Emission Control System Pressure Sensor
P0451 Evaporative Emission Control System Pressure Sensor Range/Performance
P0452 Evaporative Emission Control System Pressure Sensor Low Input
P0453 Evaporative Emission Control System Pressure Sensor High input
P0454 Evaporative Emission Control System Pressure Sensor Intermittent
P0455 Evaporative Emission Control System Leak Detected (gross leak)
P0456 Evaporative Emission Control System Leak Detected (very small leak)
P0457 Evaporative Emission Control System Leak Detected (fuel cap loose/off)

P0460 Fuel Level Sensor Circuit
P0461 Fuel Level Sensor Circuit Range/Performance
P0462 Fuel Level Sensor Circuit Low Input
P0463 Fuel Level Sensor Circuit High Input
P0464 Fuel Level Sensor Circuit Intermittent

P0465 EVAP Purge Flow Sensor Circuit
P0466 EVAP Purge Flow Sensor Circuit Range/Performance
P0467 EVAP Purge Flow Sensor Circuit Low Input
P0468 EVAP Purge Flow Sensor Circuit High Input
P0469 EVAP Purge Flow Sensor Circuit Intermittent

P0470 Exhaust Pressure Sensor
P0471 Exhaust Pressure Sensor Range/Performance
P0472 Exhaust Pressure Sensor Low
P0473 Exhaust Pressure Sensor High
P0474 Exhaust Pressure Sensor Intermittent
P0475 Exhaust Pressure Control Valve
P0476 Exhaust Pressure Control Valve Range/Performance
P0477 Exhaust Pressure Control Valve Low
P0478 Exhaust Pressure Control Valve High
P0479 Exhaust Pressure Control Valve Intermittent

P0480 Cooling Fan 1 Control Circuit
P0481 Cooling Fan 2 Control Circuit
P0482 Cooling Fan 3 Control Circuit
P0483 Cooling Fan Rationality Check
P0484 Cooling Fan Circuit Over Current
P0485 Cooling Fan Power/Ground Circuit

P0486 Exhaust Gas Recirculation Sensor “B” Circuit
P0487 Exhaust Gas Recirculation Throttle Position Control Circuit
P0488 Exhaust Gas Recirculation Throttle Position Control Range/Performance

P0491 Secondary Air Injection System (Bank 1)
P0492 Secondary Air Injection System (Bank 2)

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