Ford OBD Codes: Meaning & Fixes

P0174 Powertrain The cylinder bank without cylinder 1 is running lean even with the maximum fuel correction… Moderate P0300 Powertrain The engine computer sees misfires that jump between cylinders or hit several cylinders at once. High P0430 Powertrain The bank 2 converter on a V6, V8 or split-exhaust engine isn't cleaning the exhaust well enough. Low P0302 Powertrain Cylinder 2 keeps misfiring. On inline engines it's a middle cylinder, so rule out coolant… Moderate P0303 Powertrain Cylinder 3 is misfiring. Check whether it misses at idle or under load before you blame… Moderate P0304 Powertrain Cylinder 4 is misfiring. Its end or rear position makes water, oil and intake leaks common… Moderate

B0052 Body Usually a fault in the front passenger's buckle sensor; on GM vehicles it is a stored crash… Moderate B00A0 Body The front passenger seat sensing system has failed, so the car can't tell who, if anyone… High B1342 Ford · Body A Ford module failed its own internal self-test. Which module stored it decides what gets fixed. Moderate B1676 Ford · Body The ABS or another Ford module saw its supply voltage go too low or too high, and it shut its… Moderate B2278 Ford · Body The power steering module can't trust the column torque sensor, so it drops or limits steering… High C0021 Chassis The brake module thinks the power brake booster isn't giving the assist it should. Check pedal… High C1145 Ford · Chassis Ford's ABS module found an open or short in the right front (passenger-side) wheel speed sensor… Moderate C1155 Ford · Chassis Ford's ABS module saw the left front (driver-side) sensor circuit go open or shorted, often… Moderate C1165 Ford · Chassis Ford's ABS module detected an open or short in the right rear wheel speed sensor wiring… Moderate C1175 Ford · Chassis Electrical fault in the left rear sensor circuit, or in the single rear-axle sensor on some… Moderate C1185 Ford · Chassis The ABS module's internal power relay isn't delivering voltage to the valves and pump, so ABS… Moderate C1233 Ford · Chassis The left front sensor wiring checks out, but no speed pulses reached the ABS module while… Moderate C1234 Ford · Chassis While driving, the right front speed signal dropped out or disagreed with the other wheels. Moderate P0001 Powertrain The PCM can't drive the solenoid that meters fuel into the high-pressure pump. Often a no-start… High P0018 Powertrain The bank 2 intake cam is out of step with the crankshaft on a V or boxer engine; chain wear… High P0022 Powertrain The bank 2 intake cam can't advance as far as the PCM asks; phaser, oil pressure or a worn bank… Moderate P0087 Powertrain Measured fuel pressure has dropped well below what the engine computer is asking for. High P0174 Powertrain The cylinder bank without cylinder 1 is running lean even with the maximum fuel correction… Moderate P0191 Powertrain The rail pressure reading is electrically valid but doesn't make sense for how the engine… Moderate P0200 Powertrain The ECU found a fault in the injector control circuits that it can't pin on one cylinder, often… High P0205 Powertrain The ECU sees a broken or faulty electrical circuit to the cylinder 5 injector, so that cylinder… Moderate P0208 Powertrain The circuit to injector 8, the rear cylinder on bank 2 of a V8, is open or doesn't respond… Moderate P0217 Powertrain The engine overheated. Stop driving: continuing can warp the head, blow the head gasket… Critical P0230 Powertrain The engine computer found a fault in the circuit it uses to switch the fuel pump relay or pump… Moderate P0263 Powertrain Cylinder 1 is producing noticeably more or less power than the others, beyond what fuel trim… Moderate P0300 Powertrain The engine computer sees misfires that jump between cylinders or hit several cylinders at once. High P0301 Powertrain Cylinder 1 is repeatedly failing to fire. The cause is almost always its coil, plug, injector… Moderate P0302 Powertrain Cylinder 2 keeps misfiring. On inline engines it's a middle cylinder, so rule out coolant… Moderate P0303 Powertrain Cylinder 3 is misfiring. Check whether it misses at idle or under load before you blame… Moderate P0304 Powertrain Cylinder 4 is misfiring. Its end or rear position makes water, oil and intake leaks common… Moderate