BMW 3 E46 All Fault Codes
BMW 3 E46 M3, 323i, 325i, 325xi, 328i, 330i, 330xi. Sedan, Coupe, Convertible, Sport Wagon. Fault Codes list
Owing to the advanced nature of OBD II adaptive strategies, all diagnostics need to start with a scan tool. The aftermarket scan tools can be connected to either the 16-pin OBD II Data Link Connector (DLC) or the BMW 20-pin DLC in the engine compartment. Data from the OBD II DLC may be limited, depending on scan tool and vehicle.
OBD II standards mandate that the 16-pin DLC must be located within three (3) feet of the driver and must not
require any tools to be exposed. The communication protocol used by BMW is ISO 9141. Starting with June 2000 production, the 20-pin BMW diagnostic port (Data Link Connector or DLC) which was previously located in the engine compartment has been deleted. All diagnostic, coding and programming functions are incorporated into the OBD II diagnostic port, located under left side of dashboard.
Below is a comprehensive listing of BMW DTCs and the corresponding SAE P-codes
| BMW code | P-code | Fault type and function | Signal type and range | Explanation |
|---|---|---|---|---|
| 1 | Ignition coil cyl.2 | Input analog timing (100 mV) | DME initiates secondary ignition for each cylinder then looks for feedback through shunt resistor in harness to determine if ignition actually occurred. | |
| 2 | Ignition coil cyl.4 | Input analog timing (100 mV) | DME initiates secondary ignition for each cylinder then looks for feedback through shunt resistor in harness to determine if ignition actually occurred. | |
| 3 | Ignition coil cyl.6 | Input analog timing (100 mV) | DME initiates secondary ignition for each cylinder then looks for feedback through shunt resistor in harness to determine if ignition actually occurred. | |
| 5 | P0202 | Injector circuit cyl. 2 | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 6 | P0201 | Injector circuit cyl. 1 | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 8 | P0101 | Mass air flow circuit range/perf. | Input analog (0-5V) | Failed signal range check against predefined diagnostic limits. |
| 10 | Engine coolant temp. circuit range/perf. | Input analog (0-5V) | Signal range is checked against predefined diagnostic limits within specific engine operations. | |
| 11 | Coolant temp. coolant outlet | Input analog (0-5V) | Signal range is checked against predefined diagnostic limits within specific engine operations. | |
| 14 | P0111 | Intake air temp. range/performance | Input analog (0-5V) | Signal range is checked against predefined diagnostic limits within specific engine operations. |
| 18 | P1397 | Exhaust cam position sensor malfunction | Input analog phase shift (0-5V) | Internal check of phase shift from camshaft sensor - should change during every crankshaft revolution. Phase shift occurs due to 2:1 relationship between camshafts. |
| 19 | P1529 | VANOS solenoid activation, exhaust | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 21 | P1525 | VANOS solenoid activation, intake | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 22 | P0203 | Injector circuit cyl. 3 | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 23 | P0206 | Injector circuit cyl. 6 | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 24 | P0204 | Injector circuit cyl. 4 | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 25 | P0135 | Oxygen sensor heater pre-cat (Bank1) | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 27 | P1550 | Idle control valve closing coil | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 29 | Ignition coil cyl.1 | Input analog timing (100 mV) | DME initiates secondary ignition for each cylinder then looks for feedback through shunt resistor in harness to determine if ignition actually occurred. | |
| 30 | Ignition coil cyl.3 | Input analog timing (100 mV) | DME initiates secondary ignition for each cylinder then looks for feedback through shunt resistor in harness to determine if ignition actually occurred. | |
| 31 | Ignition coil cyl.5 | Input analog timing (100 mV) | DME initiates secondary ignition for each cylinder then looks for feedback through shunt resistor in harness to determine if ignition actually occurred. | |
| 33 | P0205 | Injector circuit cyl. 5 | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 35 | P1453 | Secondary air injection pump | Output digital on/off (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 36 | MS 43 Main relay malfunction | Input analog (0-12V) | Signal range check between DME ignition analog input and main relay power circuit analog input. | |
| 38 | MS 43 Clutch switch faulty | Input digital (0-12V) | Plausibility check of clutch switch and DME internal values such as load and engine speed. | |
| 39 | Brake light switch, and brake light plausibility test | Input digital (0-12V) | When brake light switch is active, brake light test switch must be also active. If not, fault is stored. | |
| 40 | Brake light switch, pedal sensor plausibility test | Input digital / analog (0-12V / 0-5V) | If pedal sensor is showing angle greater than "limp home angle" and additionally brake light switch is active, fault is stored. | |
| 42 | Multi functional steering wheel, redundant code | Input binary stream (0-12V) | Every signal from cruise control switch is transferred redundantly. A fault is set whenever two redundant information paths are showing a different status. | |
| 43 | Multi functional steering wheel, control switch | Input binary stream (0-12V) | When status from cruise control showing set/accelerate and deceleration are same time, fault is set. | |
| 45 | Multi functional steering wheel, toggle-bit | Input binary stream (0-12V) | Every 0.5 sec. a message that includes a toggle bit (toggles between 0->1 and 1->0) is transmitted. Change bit is monitored to indicate proper function. | |
| 47 | MS 43 Torque monitoring level 1 | DME internal values logical | ||
| 48 | MS 43 Internal control module | DME HW test memory | ||
| 49 | ECU internal test | DME HW test | ||
| 50 | P1145 | MS 42 Running losses valve (3/2), final stage | Output digital on/off (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 50 | MS 43 ECU internal test | DME HW test | ||
| 51 | MS 43 ECU internal test | DME HW test | ||
| 52 | Rear exhaust valve flap | Output digital steady (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. | |
| 53 | P1509 | Idle control valve opening coil | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 55 | P0155 | Oxygen sensor heater pre-cat (Bank 2) | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 56 | Ignition feedback, interruption at shunt resistor | Input analog (32V) | Check for correct signal voltage. If voltage is 32V (limitation voltage) then secondary ignition voltage is detected and shunt resistor may be faulty. | |
| 57 | P0325 | Knock sensor 1 circuit, (Bank 1) circuit continuity | Input analog amplitude (13-19kHz) | Plausibility check between knock sensor amplitude during knocking with internal knock detection mapped DME values. |
| 59 | P0330 | Knock sensor 2 circuit, (Bank 2) circuit continuity | Input analog amplitude (13-19kHz) | Plausibility check between knock sensor amplitude during knocking with internal knock detection mapped DME values. |
| 61 | P0141 | Oxygen sensor heater post-cat (Bank 2) | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 62 | P0412 | Secondary air injection system switching valve | Output digital on/off (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 65 | P0340 | Intake cam position sensor, malfunction | Input analog phase shift 0-5V | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 68 | EVAP system, purge control valve circuit | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. | |
| 69 | Relay fuel pump | Output digital on/off (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. | |
| 74 | AC compressor relay | Output digital on/off (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. | |
| 79 | P0161 | Oxygen sensor heater post-cat (Bank 1) | Output digital pulse width (active low) | DME final stage will set flag whenever a short to ground, a short to battery voltage or a disconnection between output transistor and component exists. |
| 83 | P0335 | Crankshaft position sensor, malfunction | Input digital (0-12V) | Checks for correct signal pattern and correct number of expected flywheel teeth. |
| 100 | P0601 | Internal control module, memory check sum or communication | DME internal values logical | Internal hardware test of RAM, ROM, and Flash Prom. |
| 103 | P1519 | VANOS faulty reference value intake | DME internal values logical | Maximum VANOS adjustment angle, checked at every engine start must be within a specified limit. |
| 104 | P1520 | VANOS faulty reference value exhaust | DME internal values logical | Maximum VANOS adjustment angle, checked at every engine start must be within a specified limit. |
| 105 | P1522 | VANOS stuck (Bank 1) intake | DME internal values | Monitoring of a desired VANOS adjustment within a predefined diagnostic time limit. |
| 106 | P1523 | VANOS stuck (Bank 2) exhaust | DME internal values | Monitoring of a desired VANOS adjustment within a predefined diagnostic time limit. |
| 109 | P1580 | Motor throttle valve pulse width not plausible | Output digital pulse width (0-12V) | Throttle position control algorithm checks for problems with mechanical coupling spring within motor throttle body. |
| 110 | P1542 | Pedal sensor potentiometer 1 | Input analog (0-5V) | Failed signal range check against predefined diagnostic limits. |
| 111 | P1542 | Pedal Sensor Potentiometer 2 | Input analog (0-5V) | Failed signal range check against predefined diagnostic limits. |
| 112 | P0120 | MS 42 Motor throttle valve potentiometer 1 | Input analog (0-5V) | Failed signal range check against predefined diagnostic limits. |
| 112 | MS 43 Throttle position sensor 1 | Input analog (0-5V) | Failed signal range check against predefined diagnostic limits. | |
| 113 | P0120 | Motor throttle valve potentiometer 2 | Input analog (0-5V) | Failed signal range check against predefined diagnostic limits. |
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