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BMW M57 Fault Codes

OBD-II and BMW-specific fault codes (DTCs) for the M57 diesel, with meanings and the systems they affect.

Injector electrical

0200: Meaning: Cylinder No. 1 injector - injector electrical (shorts/breaks, control unit current); electrical lines and injector coils monitored · Subsystem: Injector electrical
0201: Meaning: Cylinder No. 2 injector - injector electrical · Subsystem: Injector electrical
0202: Meaning: Cylinder No. 3 injector - injector electrical · Subsystem: Injector electrical
0203: Meaning: Cylinder No. 4 injector - injector electrical · Subsystem: Injector electrical
0204: Meaning: Cylinder No. 5 injector - injector electrical · Subsystem: Injector electrical
0205: Meaning: Cylinder No. 6 injector - injector electrical · Subsystem: Injector electrical · Note: Shared bank lines: for injector faults of type 'current on high side too high' or 'current on low side too high', although assigned to one injector, the cause may lie in the combined lines (U_MV1 and U_MV2 for one bank) in any of the three cylinders' leads on that bank.

Injector output stage

1E45: Meaning: Capacitor voltage 1 for cylinders 1, 2, 3 - injector output stage (voltage transient), monitored in ECU · Subsystem: Injector output stage · Reaction: Engine shutdown (injector output-stage fault)
1E50: Meaning: Capacitor voltage 2 for cylinders 4, 5, 6 - injector output stage (voltage transient), monitored in ECU · Subsystem: Injector output stage · Reaction: Engine shutdown (injector output-stage fault)

Rail pressure control valve (DRV)

1195: Meaning: Rail pressure control valve - DRV coil / wiring short- & open-circuit · Subsystem: Rail pressure control valve (DRV) · Reaction: Valve activated with minimum pulse-duty factor; injection quantity limited

Rail pressure sensor

0190: Meaning: Rail pressure sensor - sensor lines + ECU supply voltage, shorts/breaks · Subsystem: Rail pressure sensor · Reaction: Substitute value output; injection volume limited

Pre-supply pressure sensor

1255: Meaning: Pre-supply (pre-pressure) sensor - pre-supply pressure sensor lines + ECU supply, shorts/breaks; sensor integrated in fuel filter housing · Subsystem: Pre-supply pressure sensor · Reaction: Dummy value output by DDE

Pre-supply pressure monitoring

1260: Meaning: Pre-supply pressure monitoring - impermissible deviation of pre-supply pressure from setpoint · Subsystem: Pre-supply pressure monitoring · Reaction: Depending on deviation: injection quantity reduced, or engine shut down, or engine start disabled

Camshaft / crankshaft rpm sensor

1E25: Meaning: Rpm sensor monitoring (camshaft Hall sensor) - camshaft signal fault; also has two modes indicating a faulty crankshaft signal · Subsystem: Camshaft / crankshaft rpm sensor · Reaction: While running: no effect except boost-pressure control deactivated; once switched off, engine refuses to restart if fault persists

High-pressure rail plausibility

1190: Meaning: Rail pressure plausibility - high-pressure rail monitoring deviation · Subsystem: High-pressure rail plausibility · Reaction: Engine shutdown · Note: Monitored variables (deviation -> 1190): rail pressure inside min/max limits; manipulated variable at rail pressure control valve inside min/max limits; plausibility of rail pressure and manipulated variable. Possible causes: fuel tank empty; faults in pre-supply system; internal/external leaks in HP system; inadequate HP pump efficiency; excessive injector leak-off rate; injector control quantity too high; rail pressure control valve sticking.

Injector fault 'current on high side too high' / 'current on low side too high': Reaction: Engine shuts down
Injector fault 'load drop' (line break): Reaction: Engine continues to operate if no more than one injector affected
High-pressure control system fault (general): Reaction: DRV de-energized; EAB (electric fuel shut-off) closes; DRV activation duration = 0 ms; bank 1/2 shut down -> engine shuts down
Rail-pressure monitoring - engine speed requirement: Threshold: Engine speed > 550 rpm
Rail-pressure monitoring - additional conditions: Threshold: Rail pressure control in operation; no fault registered for rail pressure sensor
Rail-pressure control operating range: Threshold: 200 - 1350 bar
Rail-pressure monitoring general precondition: Threshold: Engine speed above a minimum value AND monitoring in normal control mode
Smooth-running correction range (max): Threshold: Correction quantities within a maximum range of 10 mm3 stroke/cylinder
Smooth-running - non-critical band: Threshold: Quantities up to approx. 5 mm3 stroke/cylinder considered non-critical
Smooth-running control active region: Threshold: Only active in operating range close to idle speed
Fuel return line pressure (for correct injection): Threshold: Must not exceed 1.5 bar (absolute); DDE does not register this pressure
EKP/DRV activation at terminal 15 ON: Threshold: Power applied to electric fuel pump for 60 s; DRV activated at 1 kHz
EKP/DRV permanent activation: Threshold: On exceeding minimum speed of 50 rpm both permanently activated until terminal 15 off

DPF

P2002 (BMW 480A / 481A): System: DPF · Meaning: Diesel particulate filter efficiency below threshold / DPF excessively clogged. BMW 480A & 481A: after repeated insufficient regenerations the fault is stored and further regeneration is then inhibited. · Cause: Soot-loaded or failed DPF; often a knock-on effect of another fault (bad thermostat, EGR, glow plugs, short-trip driving); faulty differential-pressure sensor · Note: 480A/481A specific to 2005/06-on BMW diesels (DPF-equipped). P2002 is the closest generic OBD-II equivalent.
BMW 4165: System: DPF · Meaning: DPF flow resistance too high · Cause: Blocked/ash-loaded DPF, incomplete regeneration
P2458: System: DPF · Meaning: DPF regeneration duration / DPF differential-pressure sensor circuit issue (Sensor A circuit low) · Cause: Faulty DPF differential-pressure sensor, blocked pressure hoses, DPF clogged
P2463: System: DPF · Meaning: DPF soot accumulation (soot content not OK, function restricted) · Cause: Excessive soot load, interrupted regens, faulty diff-pressure or exhaust-temp sensor
P244A: System: DPF · Meaning: DPF differential pressure too low (bank 1) · Cause: Cracked/failed DPF substrate, leaking/blocked pressure hose, sensor fault
P244B: System: DPF · Meaning: DPF differential pressure too high (bank 1) · Cause: Clogged DPF, blocked hose, faulty diff-pressure sensor

Exhaust temp

P2033 / P2471 / P0546: System: Exhaust temp · Meaning: Exhaust gas temperature (EGT) sensor circuit fault (high/low/range). P2033 = EGT sensor circuit high bank1 sensor2; P2471 = EGT sensor high bank1 sensor4 · Cause: Failed EGT sensor (pre-DPF / pre-turbo), wiring/connector corrosion · Note: Sensor number varies by exhaust position; meaning of the specific channel differs per fitment.

EGR

P0401 (BMW 0400): System: EGR · Meaning: Exhaust gas recirculation flow insufficient · Cause: Carbon-clogged EGR valve/cooler, stuck valve, blocked intake, vacuum/actuator fault
P0402: System: EGR · Meaning: Exhaust gas recirculation flow excessive · Cause: Stuck-open EGR valve, faulty EGR position/flow feedback, actuator fault
P0405 (BMW 03E6): System: EGR · Meaning: EGR sensor A circuit low / EGR position-sensor or regulation fault (BMW 03E6 = EGR regulation) · Cause: Faulty EGR position sensor, wiring, sticking valve
P0403: System: EGR · Meaning: EGR control circuit / solenoid electrical fault · Cause: Failed EGR solenoid/actuator, vacuum solenoid, wiring open/short

Swirl flaps / intake

P2015 (BMW intake port / swirl feedback): System: Swirl flaps / intake · Meaning: Intake manifold runner / swirl-flap position sensor - circuit range/performance · Cause: Failed swirl-flap actuator or position sensor, seized/broken swirl flaps, linkage · Note: P2015 is most commonly cited on VAG diesels; on M57 swirl-flap faults may instead log an intake-manifold/actuator BMW hex code. Meaning varies by platform - verify against ISTA.
P2004 / P2005: System: Swirl flaps / intake · Meaning: Intake manifold runner control stuck open (P2004) / stuck closed (P2005) bank 1 · Cause: Seized swirl flaps, broken flap/linkage, failed actuator motor

Boost / charge pressure

BMW 1430 / P0234 (overboost), P0299 (underboost): System: Boost / charge pressure · Meaning: Boost-pressure regulation or actuator fault. BMW 1430 = boost pressure or actuator; BMW 1470 = boost-pressure regulation. P0299 = turbo underboost; P0234 = overboost · Cause: Sticking VNT/VGT vanes, boost leak, faulty actuator/solenoid, blocked charge pipe, MAF drift
BMW 1E30: System: Boost / charge pressure · Meaning: Boost-pressure regulation or actuator (later DDE hex) · Cause: VNT actuator sticking, vacuum leak, boost-control deviation

VNT / turbo actuator

BMW 3520 / 3F00 / P0243: System: VNT / turbo actuator · Meaning: Engine boost actuation / boost-pressure actuator (turbo control solenoid) fault. BMW 3520 = engine boost actuation; BMW 3F00 = boost-pressure sensor short to B+ · Cause: Failed turbo vacuum/electronic actuator, VNT vane mechanism seized, wiring

Boost / charge pressure

BMW 0235 / P0237 / P0238: System: Boost / charge pressure · Meaning: Boost / charge-pressure sensor fault (BMW 0235 = boost pressure sensor). P0237 low / P0238 high · Cause: Failed charge-pressure sensor, contamination, wiring

MAF / HFM (air mass)

BMW 0100 / 3605 / 3620 (P0100-P0102): System: MAF / HFM (air mass) · Meaning: Air-mass / hot-film air-mass meter (HFM) fault. BMW 0100 = air flow sensor HFM; 3605 = air flow meter HFM 1/2; 3620 = HFM signal · Cause: Contaminated/aged MAF sensor, air leak upstream, wiring
P0101: System: MAF / HFM (air mass) · Meaning: Mass air flow circuit range/performance (implausible air mass) · Cause: Dirty/failing MAF, intake/boost leak, clogged air filter, EGR over-flow

Intake air temp

BMW 0110 / P0112 / P0113: System: Intake air temp · Meaning: Intake air temperature sensor fault (BMW 0110) · Cause: Failed IAT sensor, wiring short/open

Coolant temp / thermostat

BMW 0115 / P0115 / P0116 / P0128: System: Coolant temp / thermostat · Meaning: Coolant temperature sensor fault (BMW 0115). P0128 = coolant thermostat below regulating temperature · Cause: Stuck-open thermostat (engine runs cold - blocks DPF regen), failed coolant temp sensor, wiring · Note: Stuck-open thermostat is a top root cause of DPF regen failure / 480A on the 335d.

Crankshaft sensor

BMW 0335 / P0335 / P0336: System: Crankshaft sensor · Meaning: Crankshaft position / RPM sensor fault (BMW 0335 = crankshaft RPM) · Cause: Failed crank sensor, damaged reluctor/trigger wheel, wiring, air gap

Camshaft sensor

P0340 / P0341: System: Camshaft sensor · Meaning: Camshaft position sensor circuit / correlation fault · Cause: Failed cam sensor, wiring, timing-chain stretch affecting cam/crank correlation

Rail pressure sensor

BMW 0190 / 1195 / 4560 / 4580 (P0192/P0193): System: Rail pressure sensor · Meaning: Rail-pressure sensor fault/plausibility. BMW 0190 & 1195 = rail-pressure sensor; 4560 = rail pressure too low (plausibility); 4580 = rail pressure too high (plausibility) · Cause: Failed rail-pressure sensor, sensor drift, low-pressure supply issue

Rail pressure / regulation

BMW 1190 / P0087 / P0088: System: Rail pressure / regulation · Meaning: Rail-pressure regulation (BMW 1190). P0087 = fuel rail pressure too low; P0088 = too high · Cause: Worn high-pressure pump, leaking injectors, metering/pressure-control valve, clogged fuel filter, low-pressure supply

Rail pressure / metering

BMW 4B90: System: Rail pressure / metering · Meaning: Rail-pressure control at engine start - fuel high-pressure system deviates from setpoint at cranking · Cause: Worn/failing high-pressure pump, pressure-control (DRV) or metering valve, leaking injectors, clogged fuel filter, low-pressure supply · Note: Very common cold-start no-start / long-crank code on the 335d M57.
BMW 3580 / 3565: System: Rail pressure / metering · Meaning: High-pressure pump shut-off / metering (volume-control) valve (BMW 3580 = HP pump shut-off valve; 3565 = high-pressure pump) · Cause: Failed metering/quantity-control valve on HP pump, wiring, worn pump

Injectors

BMW 0200-0205 (P0201-P0206): System: Injectors · Meaning: Injector electrical fault, cylinders 1-6 (BMW 0200-0205 map to cyl 1-6) · Cause: Failed/worn injector, injector solenoid open/short, wiring/connector, injector needing coding (IMA/correction values)
BMW 4B45 (and per-cyl energy-measurement variants): System: Injectors · Meaning: Injector cylinder 1 energy-consumption measurement (injector characteristic/quantity deviation) · Cause: Worn or drifting injector, needs replacement or re-coding · Note: Per-cylinder equivalents exist for cyl 2-6; exact hex differs per cylinder.

Glow plugs / preheat

BMW 4211/4221/4231/4241/4251/4261: System: Glow plugs / preheat · Meaning: Glow plug cyl 1-6 - short circuit to B+ (individual glow-plug electrical fault) · Cause: Failed glow plug (open/short), wiring, glow-plug module output stage · Note: Numbering scheme (4211/4221/...) varies between DDE versions; some lists show 4203/4212/4222 style codes - confirm against ISTA.

Glow plugs / preheat module

BMW 42DE (and 42D2/42D3-style variants): System: Glow plugs / preheat module · Meaning: Glow-plug control unit / preheating module fault · Cause: Failed glow-plug control module (very common on M57N/335d), supply cable from alternator, connector poor contact · Note: If >3 glow-plug channels fail, DPF regeneration is inhibited. Module fails more often than the plugs themselves.

Glow plugs / preheat

P0671-P0676: System: Glow plugs / preheat · Meaning: Glow plug circuit cylinder 1-6 (generic OBD-II per-cylinder glow-plug fault) · Cause: Failed glow plug on that cylinder, wiring, module output

DDE power supply

BMW 3510: System: DDE power supply · Meaning: DDE main relay fault · Cause: Failed main relay, supply wiring, DDE power feed

Fuel delivery (low pressure)

BMW 1250 / 1260: System: Fuel delivery (low pressure) · Meaning: Delivery (lift/transfer) pump relay (1250) / delivery-pump control system (1260) · Cause: Failed low-pressure/transfer pump, relay, wiring - can also cause low rail pressure downstream

NOx / SCR (US)

P20EE / P2BAD: System: NOx / SCR (US) · Meaning: SCR NOx catalyst efficiency below threshold (P20EE) / NOx too high (P2BAD) - AdBlue/SCR systems · Cause: Failed NOx sensor, SCR catalyst degradation, AdBlue dosing/quality fault, DEF injector · Note: Applies only to SCR/AdBlue-equipped M57 variants (primarily US-market 335d BluePerformance and later). Non-SCR EU M57 will not set these.
P2200 / P2201 / P229F: System: NOx / SCR (US) · Meaning: NOx sensor circuit / range-performance / SCR NOx sensor signal fault · Cause: Failed upstream/downstream NOx sensor, wiring, contamination, SCR fault · Note: SCR-equipped variants only (e.g., US 335d). Sensor position (pre/post SCR) changes exact meaning.