OBD-II Powertrain Codes

OBDII Diagnostic Trouble Code (DTC) Lookup

On Board Diagnostics (OBD II) is an enhanced diagnostics monitor built into a vehicle's Powertrain Control Module (PCM), as of 1996 all vehicles had to be OBD II compliant.

Diagnostic Trouble Code (DTC)

There hundreds of DTCs that can occur, which indicate that some subsection of the vehicle is experiencing a problem.

When one of these errors occurs, usually it will turn on the Malfunction Indicator or "check engine" Light on the dashboard.

By using a simple code reader plugged into the OBD II port, you can easily retrieve these DTCs, which will greatly reduce the time and effort required to isolate a particular issue with a vehicle.

Each OBD II Diagnostic Trouble Code has 5 characters, starting with a letter to indicate the general sub-system where the error occurred.
For example : P1209 is the Ford specific Powertrain code for an Injection Control Pressure (ICP) system fault, with the probable cause being the Injection Pressure Regulator (IPR) valve being stuck.

  • PXXXX - Powertrain
  • BXXXX - Body
  • CXXXX - Chassis
  • UXXXX - Network

After retrieving an OBDII DTC with a reader, login to Your Vehicle Service History, select Diagnostics from the menu and enter the trouble code for a quick look up.

Some more example OBDII diagnostic trouble codes are listed below:

Code

Condition Description

Probable Causes

P0107

Barometric pressure sensor circuit low input

PCM's internal barometric sensor

P0108

Barometric pressure sensor circuit high input

PCM's internal barometric sensor

P0112

Intake air temp. sensor circuit low input

Grounded circuit, biased sensor, PCM

P0113

Intake air temp. sensor circuit high input

Open circuit, biased sensor, PCM, short to 5v

P0122

Accelerator pedal sensor circuit low input

Grounded circuit, biased sensor, PCM

P0123

Accelerator pedal sensor circuit high input

Open circuit, biased sensor, PCM, short to 5v

P0197

Engine oil temp. sensor circuit low input

Grounded circuit, biased sensor, PCM

P0198

Engine oil temp. sensor circuit high input

Open circuit, biased sensor, PCM, short to 5v

P0220

Throttle switch B circuit malfunction

Short/open circuit, switch failure, operator, PCM

P0221

Throttle switch B circuit performance

Failed pedal assembly

P0230

Fuel pump relay driver failure

Open FP relay, blown fuse, open/grounded circuit

P0231

Fuel pump circuit failure

Fuse, relay, inertia switch, fuel pump, open/short circuit

P0232

Fuel pump circuit failure

Relay failure, short circuit, pump failure

P0236

Turbo boost sensor A circuit performance

Restricted inlet/exhaust/supply hose, missing hose

P0237

Turbo boost sensor A circuit low input

Circuit open, short to ground, MAP sensor

P0238

Turbo boost sensor A circuit low high

Circuit short to power, MAP sensor

P0261

Injector circuit low Cylinder 1

Harness short to ground

P0262

Injector circuit high Cylinder 1

Miswired connector or harness

P0263

Cylinder 1 contribution/balance fault

Power cylinder, valve train or injector problem, circuit

P0264

Injector circuit low Cylinder 2

Harness short to ground

P0265

Injector circuit high Cylinder 2

Miswired connector or harness

P0266

Cylinder 2 contribution/balance fault

Power cylinder, valve train or injector problem, circuit

P0267

Injector circuit low Cylinder 3

Harness short to ground

P0268

Injector circuit high Cylinder 3

Miswired connector or harness

P0269

Cylinder 3 contribution/balance fault

Power cylinder, valve train or injector problem, circuit

P0270

Injector circuit low Cylinder 4

Harness short to ground

P0271

Injector circuit high Cylinder 4

Miswired connector or harness

P0272

Cylinder 4 contribution/balance fault

Power cylinder, valve train or injector problem, circuit

P0273

Injector circuit low Cylinder 5

Harness short to ground

P0274

Injector circuit high Cylinder 5

Miswired connector or harness

P0275

Cylinder 5 contribution/balance fault

Power cylinder, valve train or injector problem, circuit

P0276

Injector circuit low Cylinder 6

Harness short to ground

P0277

Injector circuit high Cylinder 6

Miswired connector or harness

P0278

Cylinder 6 contribution/balance fault

Power cylinder, valve train or injector problem, circuit

P0279

Injector circuit low Cylinder 7

Harness short to ground

P0280

Injector circuit high Cylinder 7

Miswired connector or harness

P0281

Cylinder 7 contribution/balance fault

Power cylinder, valve train or injector problem, circuit

P0282

Injector circuit low Cylinder 8

Harness short to ground

P0283

Injector circuit high Cylinder 8

Miswired connector or harness

P0284

Cylinder 8 contribution/balance fault

Power cylinder, valve train or injector problem, circuit

P0301

Fault cylinder 1 Misfire detected

Mechanical engine failure

P0302

Fault cylinder 2 Misfire detected

Mechanical engine failure

P0303

Fault cylinder 3 Misfire detected

Mechanical engine failure

P0304

Fault cylinder 4 Misfire detected

Mechanical engine failure

P0305

Fault cylinder 5 Misfire detected

Mechanical engine failure

P0306

Fault cylinder 6 Misfire detected

Mechanical engine failure

P0307

Fault cylinder 7 Misfire detected

Mechanical engine failure

P0308

Fault cylinder 8 Misfire detected

Mechanical engine failure

P0340

Camshaft position sensor ckt. malfunction

Open/grounded circuit, sensor fault, short to power

P0341

Camshaft position sensor ckt. performance

Harness routing, charging circuit, sensor

P0344

Camshaft position sensor ckt. intermittent

Harness routing, charging ckt., sensor, int. ckt., improper gap

P0380

Glow plug circuit malfunction

Open/grounded ckt., solenoid open/shorted, failed PCM

P0381

Glow plug indicator circuit malfunction

Open/grounded circuit, lamp open, failed PCM

P0460

Fuel level sensor circuit malfunction

Open/short circuit, cluster, tank unit, open case GND

P0470

Exhaust back pressure sensor circuit malfunction

Biased sensor, open signal return

P0471

Exhaust back pressure sensor circuit performance

Plugged, stuck or leaking hose

P0472

Exhaust back pressure sensor circuit low input

Open/grounded circuit, biased sensor, PCM

P0473

Exhaust back pressure sensor circuit high input

Circuit shorted to 5v, biased sensor, PCM

P0475

Exhaust pressure control valve malfunction

Open/grounded ckt., solenoid open/shorted, failed PCM

P0476

Exhaust pressure control valve performance

Failed/stuck EPR control, EBP fault, EPR circuit

P0478

Exhaust pressure control valve high input

Plugged sensor line, stuck butterfly, restricted exhaust

P0500

Vehicle speed sensor malfunction

Sensor, circuit, PCM, PSOM, TR failure, low trans. fluid

P0503

Vehicle speed sensor noisy

Harness routing, sensor

P0541

Manifold intake air heater...

Open/short circuit

P0542

Manifold intake air heater...

Grounded circuit

P0560

System voltage malfunction

Charging system problem/load, glow plugs still enabled

P0562

System voltage low

Low sys. voltage, charging sys., internal PCM failure

P0563

System voltage high

High sys., voltage, charging sys., internal PCM failure

P0565

Cruise "On" signal malfunction

Open or short circuit, switch failure, PCM failure or failed to activate switch during KOER switch test

P0566

Cruise "Off" signal malfunction

Open or short circuit, switch failure, PCM failure or failed to activate switch during KOER switch test

P0567

Cruise "Resume" signal malfunction

Open or short circuit, switch failure, PCM failure or failed to activate switch during KOER switch test

P0568

Cruise "Set" signal malfunction

Open or short circuit, switch failure, PCM failure or failed to activate switch during KOER switch test

P0569

Cruise "Coast" signal malfunction

Open or short circuit, switch failure, PCM failure or failed to activate switch during KOER switch test

P0571

Brake switch A circuit malfunction

Cruise control codes will be set on every switch test on vehicles not equipped with cruise control

P0603

Internal control module KAM error

Open PCM pin, disconnect B+, faulty PCM

P0605

Internal control module ROM error

Internal PCM failure

P0606

PCM processor fault

Internal PCM failure

P0640

Manifold intake air heater...

Circuit open or shorted to ground

P0670

Glow plug control circuit malfunction

Open/grounded circuit, failed GPCM, failed PCM

P0671

Glow plug #1 circuit failure

Circuit/connector failure, failed glow plug, failed GPCM, PCM

P0672

Glow plug #2 circuit failure

Circuit/connector failure, failed glow plug, failed GPCM, PCM

P0673

Glow plug #3 circuit failure

Circuit/connector failure, failed glow plug, failed GPCM, PCM

P0674

Glow plug #4 circuit failure

Circuit/connector failure, failed glow plug, failed GPCM, PCM

P0675

Glow plug #5 circuit failure

Circuit/connector failure, failed glow plug, failed GPCM, PCM

P0676

Glow plug #6 circuit failure

Circuit/connector failure, failed glow plug, failed GPCM, PCM

P0677

Glow plug #7 circuit failure

Circuit/connector failure, failed glow plug, failed GPCM, PCM

P0678

Glow plug #8 circuit failure

Circuit/connector failure, failed glow plug, failed GPCM, PCM

P0683

Glow plug diagnostic signal communication fault

Circuit/connector failure, failed GPCM, PCM

P0703

Brake switch B circuit malfunction

Open/short circuit, switch, PCM, failed to activate switch during KOER switch test

P0704

Clutch switch input circuit malfunction; F650-F750 with Allison AT545: neutral switch

Open/short circuit, switch, PCM, failed to activate switch during KOER switch test

P0705

TR sensor circuit malfunction

Resistance in circuit, faulty sensor, PCM

P0707

TR sensor circuit low input

Open in circuit, biased sensor, PCM

P0708

TR sensor circuit high input

Open in circuit, biased sensor, PCM, short to power

P0712

Trans. fluid temp. sensor ckt. low input

Short to ground, biased sensor, PCM

P0713

Trans. fluid temp. sensor ckt. high input

Open in circuit, biased sensor, PCM, short to power

P0715

TSS sensor circuit malfunction

Short/open circuit, sensor, PCM

P0717

TSS intermittent failure

Short/open circuit, sensor, PCM

P0718

Noisy TSS

Erratic signal, sensor, intermittent circuit

P0720

OSS sensor circuit malfunction

Short/open circuit, sensor, PCM

P0721

Noisy OSS

Erratic signal, sensor, intermittent circuit

P0722

OSS intermittent failure

Short/open circuit, sensor, PCM

P0732

Gear 2 incorrect ratio

Mechanical/hydraulic failure, 4x4 switch failure

P0733

Gear 3 incorrect ratio

Mechanical/hydraulic failure, 4x4 switch failure

P0741

Torque converter clutch ckt. performance

Circuit failure, faulty solenoid, PCM

P0743

Torque converter clutch system electrical

Faulty solenoid, circuit, PCM

P0750

Shift solenoid A malfunction

Circuit failure, faulty solenoid, PCM

P0755

Shift solenoid B malfunction

Circuit failure, faulty solenoid, PCM

P0781

1-2 Shift malfunction

Circuit failure, faulty solenoid, faulty clutch, PCM

P0782

2-3 Shift malfunction

Circuit failure, faulty solenoid, faulty clutch, PCM

P0783

3-4 Shift malfunction

Circuit failure, faulty solenoid, faulty clutch, PCM

P1000

OBDII monitor status

OBDII monitors/drive cycle incomplete

P1105

Dual alternator upper fault (monitor)

Circuit failure, alternator failure, PCM

P1106

Dual alternator lower fault (control)

Circuit failure, alternator failure, PCM

P1107

Dual alternator lower circuit malf. (control)

Circuit failure, alternator failure, PCM

P1108

Dual alternator BATT lamp ckt. malf.

Open/short circuit, lamp, fuse, PCM

P1118

Manifold air temp sensor out of range low

Short to GND MAT circuit, MAT sensor

P1119

Manifold air temp sensor out of range high

Open/short to PWR circuit, MAT sensor

P1139

Water in fuel lamp circuit malfunction

WIF lamp, circuit failure, fuse, PCM

P1140

Water in fuel condition

Water in fuel, grounded circuit, shorted sensor, PCM

P1184

Engine oil temp out of self test range

Engine too cold/hot, leaking thermostat, ckt., sensor

P1209

ICP system fault

IPR valve stuck

P1210

ICP above expected level

ICP sensor, open signal return

P1211

ICP pressure above/below desired

IPR valve failed, stuck, or shorted to ground

P1212

ICP voltage not at expected level

Biased sensor or ckt., open signal return, low oil in reservoir

P1218

CID stuck high

CID circuit open, probably intermittent

P1219

CID stuck low

CID circuit short to ground, probably intermittent

P1247

Turbo boost pressure low

MAP hose, sensor, EBP sys, intake leaks, turbo

P1248

Turbo boost pressure not detected

MAP hose, sensor, EBP sys, intake leaks, turbo

P1249

Waste gate steady state failure

GND short, plugged hose/port, solenoid, actuator

P1260

Electronic positive anti-theft system failure

Refer to appropriate workshop manual.

P1261-
P1268

High to low side short cyl. # 1-8

Short circuit, shorted injector, failed IDM

P1271-
P1278

High to low side open cyl. # 1-8

Open circuit, open injector, failed IDM

P1280

ICP circuit out of range low

Open/grounded circuit, biased sensor, PCM

P1281

ICP circuit out of range high

Circuit shorted to 5v, biased sensor, PCM

P1282

Excessive ICP pressure

Faulty IPR regulator (sticking), IPR short to ground

P1283

IPR circuit failure

Open/grounded circuit, stuck IPR, loose connection

P1284

ICP failure aborts KOER CCT test

See codes P1280, P1281, P1282, P1283, P1211

P1291

High side # 1 (right) short to grd. or B+

Short circuit, faulty IDM

P1292

High side # 2 (left) short to grd. or B+

Short circuit, faulty IDM

P1293

High side open bank No. 1 (right)

Open circuit, faulty IDM

P1294

High side open bank No. 2 (left)

Open circuit, faulty IDM

P1295

Multiple faults on bank No. 1 (right)

Miswired connector or harness, short to ground

P1296

Multiple faults on bank No. 2 (left)

Miswired connector or harness, short to ground

P1297

High sides shorted together

Shorted wires, faulty IDM

P1298

IDM failure

Internal IDM failure

P1316

Injector circuit/IDM codes detected

Injector circuit failure/IDM codes detected

P1391

Glow plug circuit low input, bank #1 (right)

Open/short/miswired circuit, faulty relay, glow plugs

P1393

Glow plug circuit low input, bank #2 (left)

Open/short/miswired circuit, faulty relay, glow plugs

P1395

Glow plug monitor fault, bank #1

One or more glow plugs failed or circuit fault

P1396

Glow plug monitor fault, bank #2

One or more glow plugs failed or circuit fault

P1397

System voltage out of self test range

Voltage too high or low for glow plug monitor test

P1464

A/C on during KOER CCT test

Operator error, A/C circuit shorted to power

P1501

Vehicle moved during testing

Operator error

P1502

Invalid test APCM functioning

APCM active while KOER test is running

P1531

Invalid test accelerator pedal movement

Accelerator moved during KOER on-demand or CCT test

P1536

Parking brake applied fail

Circuit, switch, PCM, failed to activate switch KOER

P1660

OCC signal high

High system voltage, internal PCM fault

P1661

OCC signal low

Low system voltage, internal PCM fault

P1662

IDM EN circuit failure

Open relay, blown fuse, open/grounded circuit

P1663

FDCS circuit failure

Open/grounded circuit, faulty IDM

P1667

CID circuit failure

Open/grounded circuit, faulty IDM

P1668

PCM/IDM diag. communication error

Open/shorted EF or FDCS wire, open IDM grd.

P1670

EF signal not detected

Open/shorted EF circuit

P1690

Waste gate failure

WGC circuit or solenoid, PCM

P1702

TRS sensor intermittent circuit malfunction

Sensor, wiring, PCM, mechanical alignment

P1704

Digital TRS failed to transition state

Sensor, wiring, PCM, mechanical alignment

P1705

TR sensor out of self-test range

Operator error, circuit failure, faulty sensor, PCM

P1711

TFT sensor out of self-test range

Circuit failure, faulty sensor, PCM

P1713

TFT stuck in range low below 50F

Sensor, circuit, PCM

P1714

Shift solenoid 1 inductive

Circuit, solenoid, PCM

P1715

Shift solenoid 2 inductive

Circuit, solenoid, PCM

P1718

TFT stuck in range high above 250F

Sensor, circuit, PCM

P1728

Transmission slip error

Solenoid failure or mechanical failure

P1729

4x4 Low switch error

Circuit failure, faulty switch, PCM

P1744

Converter not functioning

Converter solenoid/hydraulic/mechanical failure

P1746

EPC solenoid open circuit

Open circuit, faulty solenoid, PCM

P1747

EPC solenoid short circuit

Short circuit, faulty solenoid, PCM shorted to ground

P1754

Coast clutch solenoid ckt. malfunction

Circuit failure, faulty solenoid, PCM

P1760

EPC solenoid short intermittent

Switch not detected during self test, circuit, switch

P1780

TCS circuit of out self-test range

Circuit, switch, PCM, failed to activate switch KOER

P1781

4x4 Low circuit out of self-test range

Operator error, short to ground, PCM

P1783

Transmission overtemperature condition

Internal trans. failure, circuit failure, sensor, PCM

P1902

Kickdown solenoid relay control circuit failure

Blown fuse, failed relay, open control circuit, faulty PCM, faulty wiring

P1903

Kickdown solenoid circuit low voltage

Blown fuse, failed relay, open control circuit, faulty PCM

P1904

Kickdown solenoid circuit high voltage

Blown fuse, failed relay, open control circuit, faulty PCM, open in ASMM (circuit #175)

P2262

Turbo/Super Charger Boost Pressure Not Detected - Mechanical

- Faulty Injection Control Pressure (ICP) sensor 

- Injection Control Pressure (ICP) sensor harness is open or shorted

- Injection Control Pressure (ICP) sensor circuit poor electrical connection

- EGR system fault

- Engine mechanical condition