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BMW N55 Diagnostic Fault Codes

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BMW N55 Diagnostic Fault Codes Test plan for BMW Service (development status) MEVD17.2-BN2000 MIL illumination/CC Fault Code Fault Code BMW Fault Code Description VS- DTC (Diagnostic Terminal ECU type Fault description DTC Description Component SuBcomponent Monitoring criteria Fault debouncing Voltage conditions Temperature conditions Time conditions System test Signal information Calculated value Y/N PossiBle Fault Causes Repair procedures (plant/service) message/emergency Remarks Customer perception comments Breakdown instruction Service instruction (hex) (dez) Text Trouble Code) conditions program - Use tester to activate throttle valve PWM signal used to control the and observe repositioning speed Voltage condition: throttle valve remains above 80% for - Check wiring harness between - Onboard electrical system voltage - ECE emissions warning lamp: on longer than - Throttle valve moves stiffly, DME and throttle valve between 9 V and 16 V - ECE electronic engine power The diagnostic function checks the 0.6 sec. sticking, contaminated - Visual inspection of throttle valve Temperature condition: reduction: on Breakdown notice: throttle valve's control signal for Potential problem source(s): This fault is logged in the control STEUERN_DK, - Defect in wiring harness between and air- induction system for MEVD17.2- Throttle valve, function: jammed Throttle Valve Position Control - None - CC message: on Possible apparent symptoms: Ability to continue driving is 0x2710 10000 excessively high figures that would P1639 Throttle Actuator Throttle Stuck - Throttle valve moves stiffly, module's fault memory Terminal 15 - None - None STEUERN_ENDE_DK, none Y throttle-valve actuator motor and contamination none none BN2000 permanently Throttle Stuck Permanently (Bank 1) Time condition: - US emissions warning lamp: on - Reduced power restricted because engine speed is indicate that the throttle valve sticking, immediately. STATUS_DKP_VOLT DME - Move the throttle valve manually to - None - US electronic engine power limited to roughly 1300 rpm. is seizing. contaminated - Defective throttle-valve actuator determine whether it progresses Other conditions: reduction: on - Defect in wiring harness between motor throughout its entire travel range - Active control signal to throttle - CC message: on throttle-valve actuator motor and freely without excess resistance valve DME - Replace throttle-valve actuator motor throttle valve is deactivated when the - Use tester to activate throttle valve PWM signal used to control the Voltage condition: and observe repositioning speed throttle valve remains above 80% for - Onboard electrical system voltage - Check wiring harness between - ECE emissions warning lamp: on - Throttle valve moves stiffly, The diagnostic function monitors the longer than 5 sec. between 9 V and 16 V DME and throttle valve - ECE electronic engine power sticking, contaminated throttle valve control signal for Potential problem source(s): Temperature condition: - Visual inspection of throttle valve reduction: on Breakdown notice: This fault is logged in the control STEUERN_DK, - Defect in wiring harness between MEVD17.2- Throttle valve, function: jammed excessively high figures Throttle Valve Position Control - Throttle valve moves stiffly, - None and air- induction system for - CC message: on Possible apparent symptoms: Ability to continue driving is 0x2711 10001 P1638 Throttle Actuator Throttle Stuck module's fault memory Terminal 15 - None - None STEUERN_ENDE_DK, none Y throttle-valve actuator motor and none none BN2000 briefly that would indicate that the throttle Throttle Stuck Temporarily (Bank 1) sticking, Time condition: contamination - US emissions warning lamp: on - Reduced power restricted because engine speed is immediately. STATUS_DKP_VOLT DME valve is contaminated - None - Move the throttle valve manually to - US electronic engine power limited to roughly 1300 rpm. - Defective throttle-valve actuator sticking or seizing. - Defect in wiring harness between Other conditions: determine whether it progresses reduction: on motor throttle-valve actuator motor and - Active control signal to throttle throughout its entire travel range - CC message: on DME valve freely without excess resistance - Defective throttle-valve - Replace throttle valve - Check wiring harness between logged when the difference between Voltage condition: DME and throttle valve the specified and the actual value is - Onboard electrical system voltage - Use tester to activate throttle valve - ECE emissions warning lamp: on The diagnostic function monitors the greater than the characteristic curve between 9 V and 16 V - Stiction in throttle valve and observe its reaction - ECE electronic engine power difference between specified and over throttle-valve gradient Temperature condition: - Defect in wiring harness between - Check throttle valve for reduction: on Breakdown notice: actual throttle-valve values. If this (4% - 50% ). This fault is logged in the control STEUERN_DK, MEVD17.2- Throttle valve, function: sluggish, too - None throttle-valve actuator motor and contamination and foreign objects - CC message: on Possible apparent symptoms: Ability to continue driving is 0x2714 10004 figure remains too high for a P11AA Throttle tight (Bank 1) Throttle Tight Potential problem source(s): module's fault memory Terminal 15 - None - None STEUERN_ENDE_DK, none Y none none BN2000 slow Time condition: DME - Move throttle valve by hand, - US emissions warning lamp: on - Reduced power restricted because engine speed is specified period, a fault is - Stiction in throttle valve immediately. STATUS_DKP_VOLT - None - Defective throttle-valve actuator checking for resistance to motion - US electronic engine power limited to roughly 1300 rpm. recognized and the throttle valve is - Defect in wiring harness between Other conditions: motor and noting how quickly it reduction: on deactivated. throttle-valve actuator motor and - Active control signal to throttle closes when released - CC message: on DME valve - Replace throttle-valve actuator - Defective throttle-valve motor the calculated air mass deviates too Voltage condition: starkly from the - ECE emissions warning lamp: on - Onboard electrical system voltage - If other diagnostic fault codes measured air mass. - ECE electronic engine power between 9 V and 16 V - Collateral fault caused by other related to components in the Potential problem source(s): reduction: on Mass air flow sensor, plausibility: The diagnostic function compares Mass or Volume Air Flow 'A' Circuit This fault is logged in the control Temperature condition: components in the intake system, induction tract, Valvetronic or MEVD17.2- - Collateral fault caused by other - CC message: on Possible apparent symptoms: Breakdown notice: 0x2774 10100 Air mass compared with model too the calculated air mass with the P00BD Range/Performance - Air Flow Too Mass Air Flow Too High module's fault memory Terminal 15 - None - None - None NO none Y Valvetronic, turbocharger turbocharger have been logged, then none - none BN2000 components in the intake system, - US emissions warning lamp: off - none - none high measured air mass. High immediately. Time condition: - Intake system leaking process these first (collateral faults) Valvetronic, - US electronic engine power - None - HFM defective - Check intake system for leaks turbocharger reduction: off Other conditions: - Replace HFM - Intake system leaking - CC message: none - Engine ON - HFM defective the calculated air mass deviates too Voltage condition: starkly from the - ECE emissions warning lamp: on - Onboard electrical system voltage - If other diagnostic fault codes measured air mass. - ECE electronic engine power between 9 V and 16 V - Collateral fault caused by other related to components in the Potential problem source(s): reduction: on Mass air flow sensor, plausibility: The diagnostic function compares This fault is logged in the control Temperature condition: components in the intake system, induction tract, Valvetronic or MEVD17.2- Mass or Volume Air Flow 'A' Air - Collateral fault caused by other - CC message: on Possible apparent symptoms: Breakdown notice: 0x2774 10100 Air mass compared with model too the calculated air mass with the P115D Mass Air Flow Comparison to Model module's fault memory Terminal 15 - None - None - None NO none Y Valvetronic, turbocharger turbocharger have been logged, then none - none BN2000 Mass Too High Compared to Model components in the intake system, - US emissions warning lamp: off - none - none high measured air mass. immediately. Time condition: - Intake system leaking process these first (collateral faults) Valvetronic, - US electronic engine power - None - HFM defective - Check intake system for leaks turbocharger reduction: off Other conditions: - Replace HFM - Intake system leaking - CC message: none - Engine ON - HFM defective The fault is recognized when Voltage condition: - Defective HFM, problem with the indicated air mass does not - Onboard electrical system voltage airflow to HFM, clean air tube fallen correlate with the calculated mass between 9 V and 16 V off intake air noise airflow rate. Temperature condition: attenuator - Check wiring harness on HFM - ECE emissions warning lamp: on Potential problem source(s): - 30°C < intake-air temperature < - Leak within induction tract on - Check intake system for leaks on - ECE electronic engine power Possible apparent symptoms: The diagnostic function compares - Defective HFM, problem with 120°C engine side of throttle valve (leaks in engine side
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