Reference · OBD-II
Engine fault codes.
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Air, fuel and mixture
45 code · 17 with description
- P0087Low fuel rail / system pressure→
- P0088Fuel rail / system pressure too high→
- P0089Fuel pressure regulator - operation
- P0093Large leak in fuel system
- P0100Flow meter (MAF) — the circuit
- P0101Flow meter (MAF) — signal out of range / operation→
- P0102Flow meter (MAF) — low signal→
- P0103Flow meter (MAF) — high signal
- P0106Manifold Pressure Sensor (MAP) — Out of Range Signal→
- P0107Manifold pressure sensor (MAP) — low signal
- P0108Manifold pressure sensor (MAP) — high signal
- P0110Intake air temperature sensor - circuit
- P0113Intake air temperature sensor - high signal
- P0115Coolant temperature sensor - circuit
- P0116Coolant temperature sensor — signal out of range
- P0117Coolant temperature sensor - low signal
- P0118Coolant temperature sensor - high signal
- P0120Throttle / pedal position sensor "A" - the circuit
- P0121Throttle / Pedal Position Sensor "A" - Out of Range Signal
- P0128Coolant temperature is below normal (thermostat)→
- P0130Lambda probe (bank 1, probe 1) — the circuit
- P0131Lambda probe (bank 1, probe 1) — low voltage
- P0133Lambda probe (bank 1, probe 1) — slow response→
- P0134Lambda probe (bank 1, probe 1) — no activity
- P0135Lambda probe (bank 1, probe 1) — the heater→
- P0136Lambda probe (bank 1, probe 2) — the circuit→
- P0141Lambda probe (bank 1, probe 2) — the heater→
- P0171Poor mix — bank 1→
- P0172Rich Mix — Bank 1→
- P0174Poor mix — bank 2→
- P0175Rich Mix — Bank 2
- P0190Fuel rail pressure sensor — the circuit
- P0191Fuel rail pressure sensor — signal out of range
- P0200Nozzles - the circuit
- P0201Nozzle, cylinder 1 — the circuit
- P0202Nozzle, cylinder 2 — the circuit
- P0203Nozzle, cylinder 3 — the circuit
- P0204Nozzle, cylinder 4 — the circuit
- P0234Turbo / supercharger - overpressure→
- P0299Turbo / compressor - insufficient pressure→
- P2015Valves in intake manifold (bank 1) — position signal→
- P2187Poor idle mixture — bank 1
- P2188Rich idle mixture — bank 1
- P2263Turbo / Supercharger - Pressure System Efficiency→
- P2279Air leak in intake system
Ignition, breaks and gearing
23 code · 7 with description
- P0010Camshaft Actuator "A" (Bank 1) - The Circuit
- P0011Camshaft "A" (bank 1) - too early timing / operation→
- P0014Camshaft "B" (bank 1) - too early timing / operation
- P0016Crankshaft and Camshaft (Bank 1, Sensor A) - Mismatch→
- P0300Random / repeated misfires→
- P0301Misfire - 1 cylinder→
- P0302Misfire - 2 cylinder
- P0303Misfire - 3 cylinder
- P0304Misfire - 4 cylinder
- P0305Misfire - 5 cylinder
- P0306Misfire - 6 cylinder
- P0325Knock sensor 1 (bank 1) — the circuit
- P0327Knock Sensor 1 (Bank 1) — Low Signal
- P0335Crankshaft position sensor "A" - the chain→
- P0336Crankshaft Position Sensor "A" - Out of Range Signal
- P0340Camshaft position sensor "A" (bank 1) - the circuit→
- P0341Camshaft Position Sensor "A" (Bank 1) - Out of Range Signal
- P0351Coil "A" — the circuit
- P0352Coil "B" — the circuit
- P0353Coil "C" — the circuit
- P0354Coil "D" — the circuit
- P0380Glow plugs - the "A" chain→
- P0670Glow plug module — the circuit
Emissions: EGR, catalyst, DPF, fumes
14 code · 6 with description
- P0400Exhaust Gas Recirculation (EGR) — Flow
- P0401EGR — insufficient flow→
- P0402EGR — excessive flow
- P0403EGR — the circuit→
- P0404EGR — signal out of range / operation
- P0420Catalyst Efficiency Below Threshold — Bank 1→
- P0430Catalyst Efficiency Below Threshold — Bank 2→
- P0440Fuel vapor capture system (EVAP) — malfunction
- P0442Fuel vapor system (EVAP) — small leak
- P0455Fuel vapor system (EVAP) — large leak
- P0456Fuel vapor system (EVAP) — very small leak
- P2002Particulate Filter (DPF) — Efficiency Below Threshold, Bank 1→
- P2463Particulate filter (DPF) - soot build-up→
- P242FParticulate filter (DPF) - clogging with ash
Idle, speed, oil and power supply
12 code · 2 with description
- P0480Cooling fan 1 — control
- P0500Vehicle speed sensor - malfunction
- P0505Idle control system — malfunction
- P0506Idle speed is lower than expected
- P0507Idle speed is higher than expected→
- P0520Oil pressure sensor / switch - the circuit
- P0521Oil Pressure Sensor / Switch — Out of Range Signal
- P0524Oil pressure too low
- P0562Low voltage in the on-board network→
- P0563High voltage in the on-board network
- P0571Stop switch "A" — the chain
- P0620Generator - the control circuit
Computer and communication
3 code
- P0600Serial communication — the connection
- P0601Control module - memory error
- P0606Control module — the processor
Automatic gearbox
7 code · 1 with description
- P0700Gearbox control system — there is a fault→
- P0705Gear lever position sensor - the circuit
- P0715Sensor for revolutions of the input shaft / turbine - the circuit
- P0720Sensor for revolutions of the output shaft - the circuit
- P0730Incorrect gear ratio
- P0740Clutch of the hydrotransformer - the circuit
- P0750Shift Solenoid 'A' - Malfunction
How to read the code
P — engine and gearbox, B — coupe, C — chassis, U — communication between modules. The codes with 0 after the letter are common to all makes, and those with 1 are manufacturer specific. The code itself shows where the problem is, but not the exact part that's broken—that's what diagnostics are for.
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