BMW Cars 1999-06

2.5L L6 - Auto 6

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Trouble Code: P1352



Random/Multiple Misfire Detected

Possible Causes:



Fuel metering fault that affects two or more cylinders
 
Fuel pressure too low or too high, fuel supply contaminated
 
EVAP system problem or the EVAP canister is fuel saturated
 
EGR valve is stuck open or the PCV system has a vacuum leak
 
Ignition system fault (coil, plugs) affecting two or more cylinders
 
MAF sensor contamination (it can cause a very lean condition)
 
Vehicle driven while very low on fuel (less than 1/8 of a tank)
 

Trouble Code: P1396



Camshaft Position Sensor -A- Circ Malfunction

Possible Causes:



CMP sensor circuit is open or shorted to ground
 
CMP sensor circuit is shorted to power
 
CMP sensor ground (return) circuit is open
 
CMP sensor installation incorrect (Hall-effect type)
 
CMP sensor is damaged or CMP sensor shielding damaged
 

Trouble Code: P1397



Camshaft Position Sensor Circ Malfunction

Possible Causes:



CMP sensor circuit is open or shorted to ground
 
CMP sensor circuit is shorted to power
 
CMP sensor ground (return) circuit is open
 
CMP sensor installation incorrect (Hall-effect type)
 
CMP sensor is damaged or CMP sensor shielding damaged
 

Trouble Code: P1509



Idle Air Control Valve

Possible Causes:



Charge air system leaks
 
Recirculating valve for turbocharger is faulty
 
Turbocharging system is damaged
 
Vacuum diaphragm for turbocharger needs adjusting
 
Wastegate bypass regulator valve is faulty
 

Trouble Code: P1529



Camshaft Control Circuit Short to B+

Possible Causes:



Fuel pump has failed
 
CPS circuit is open, shorted to ground or shorted to power
 
Battery voltage below 11.5 volts
 
Position actuator circuit may short to B+ or Ground
 
Camshaft timing improperly set, or continuous oil flow to the VCT piston chamber
 
Camshaft advance mechanism (the VCT unit) is sticking or binding mechanically
 
VCT solenoid valve is stuck in open position
 

Trouble Code: P1530



Camshaft Control Circuit Short to Ground

Possible Causes:



Fuel pump has failed
 
CPS circuit is open, shorted to ground or shorted to power
 
Battery voltage below 11.5 volts
 
Position actuator circuit may short to B+ or Ground
 
Camshaft timing improperly set, or continuous oil flow to the VCT piston chamber
 
Camshaft advance mechanism (the VCT unit) is sticking or binding mechanically
 
VCT solenoid valve is stuck in open position
 

Trouble Code: P1532



Camshaft Control Circuit Open

Possible Causes:



Fuel pump has failed
 
CPS circuit is open, shorted to ground or shorted to power
 
Battery voltage below 11.5 volts
 
Position actuator circuit may short to B+ or Ground
 
Camshaft timing improperly set, or continuous oil flow to the VCT piston chamber
 
Camshaft advance mechanism (the VCT unit) is sticking or binding mechanically
 
VCT solenoid valve is stuck in open position
 

Trouble Code: P1542



Throttle Actuation Potentiometer Range/Performance

Possible Causes:



Throttle valve control module is faulty
 
Throttle valve is damaged or dirty
 
Throttle valve must be in closed throttle position
 
Accelerator pedal is out of adjustment (AEG engines only)
 
Throttle position actuator is shorting to ground or power
 

Trouble Code: P1550



Idle Air Control Valve

Possible Causes:



Charge air system leaks
 
Recirculating valve for turbocharger is faulty
 
Turbocharging system is damaged
 
Vacuum diaphragm for turbocharger needs adjusting
 
Wastegate bypass regulator valve is faulty
 

Trouble Code: P1604



Internal Control Module Driver Error

Possible Causes:



(If DME was replaced) DME ID not the same as the replaced unit
 
Voltage supply for Engine Control Module (DME) has shorted
 

Trouble Code: P1743



Pressure Regulator Valve 5 Upper Threshold

Possible Causes:



Pressure control solenoid circuit is shorting to ground
 
Pressure control solenoid circuit is open
 
Valve has failed
 
TCM has failed
 

Trouble Code: P1763



Shift Solenoid C Short to Ground

Possible Causes:



Pressure control solenoid circuit is shorting to ground
 
Pressure control solenoid circuit is open
 
Valve has failed
 
TCM has failed
 

Trouble Code: P1791



EEPROM Failure

Possible Causes:



Battery terminal corrosion, or loose battery connection
 
Connection to the DME interrupted, or the circuit has been opened
 
Reprogramming error has occurred and needs replacement. Remember to check for Aftermarket Performance Products before replacing an DME.
 
Connection to the DME interrupted, or the circuit has been opened
 
Voltage supply for Engine Control Module (DME) is faulty
 

Trouble Code: P1810



Input/Turbine Speed Sensor Circuit Malfunction Upper Threshold

Possible Causes:



TVSS signal circuit is open
 
TVSS signal is shorted to chassis ground
 
TVSS signal is shorted to sensor ground
 
TVSS assembly is damaged or it has failed
 

Trouble Code: P1811



Input/Turbine Speed Sensor Circuit Malfunction Lower Threshold

Possible Causes:



TVSS signal circuit is open
 
TVSS signal is shorted to chassis ground
 
TVSS signal is shorted to sensor ground
 
TVSS assembly is damaged or it has failed
 

Trouble Code: P1812



Output Speed Sensor Circuit Malfunction Upper Threshold

Possible Causes:



TVSS signal circuit is open
 
TVSS signal is shorted to chassis ground
 
TVSS signal is shorted to sensor ground
 
TVSS assembly is damaged or it has failed
 

Trouble Code: P1813



Output Speed Sensor Circuit Malfunction Lower Threshold

Possible Causes:



TVSS signal circuit is open
 
TVSS signal is shorted to chassis ground
 
TVSS signal is shorted to sensor ground
 
TVSS assembly is damaged or it has failed
 

Trouble Code: P1814



Output Speed Sensor Circuit Malfunction Plausibility

Possible Causes:



TVSS signal circuit is open
 
TVSS signal is shorted to chassis ground
 
TVSS signal is shorted to sensor ground
 
TVSS assembly is damaged or it has failed
 

Trouble Code: P1861



2-1 Shift Range Monitoring General Malfunction

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
Mechanical malfunction in transmission
 

Trouble Code: P1862



3-2 Shift Range Monitoring

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
Mechanical malfunction in transmission
 

Trouble Code: P1863



4-3 Shift Range Monitoring

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
Mechanical malfunction in transmission
 

Trouble Code: P1864



5-4 Shift Range Monitoring

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
Mechanical malfunction in transmission
 

Trouble Code: P1865



6-5 Shift Range Monitoring

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
Mechanical malfunction in transmission
 

Trouble Code: P1881



1-2 Shift Range Monitoring Upper Threshold

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
Mechanical malfunction in transmission
 

Trouble Code: P1882



2-3 Shift Range Monitoring Upper Threshold

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
Mechanical malfunction in transmission
 

Trouble Code: P1883



3-4 Shift Upper Threshold

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
Mechanical malfunction in transmission
 

Trouble Code: P1884



4-5 Shift Upper Threshold

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
Mechanical malfunction in transmission
 

Trouble Code: P1885



5-6 Shift Upper Threshold

Possible Causes:



Solenoid valves in valve body are faulty
 
Solenoid circuit is shorting to ground
 
Solenoid circuit is open
 
TCM has failed or wiring is shorting
 
Mechanical malfunction in transmission
 

Trouble Code: P1889



System Power Supply (B+) Terminal 15 Malfunction

Possible Causes:



(If DME was replaced) DME ID not the same as the replaced unit
 
Voltage supply for Engine Control Module (DME) has shorted
 

Trouble Code: P1890



TCC Power Supply Upper Threshold

Possible Causes:



TCC solenoid has a mechanical failure
 
TCC solenoid has a hydraulic failure
 

Trouble Code: P1891



TCC Power Supply Upper Threshold

Possible Causes:



TCC solenoid has a mechanical failure
 
TCC solenoid has a hydraulic failure
 

Trouble Code: P1892



TCC Power Supply Lower Threshold

Possible Causes:



TCC solenoid has a mechanical failure
 
TCC solenoid has a hydraulic failure
 

Trouble Code: P1893



TCC Power Supply Circuit Continuity Power Short

Possible Causes:



TCC solenoid has a mechanical failure
 
TCC solenoid has a hydraulic failure
 

Trouble Code: P1894



TCC Power Supply Circuit Continuity Ground Short

Possible Causes:



TCC solenoid has a mechanical failure
 
TCC solenoid has a hydraulic failure
 

Trouble Code: P1895



TCC Power Supply Circuit Continuity Disconnection

Possible Causes:



TCC solenoid has a mechanical failure
 
TCC solenoid has a hydraulic failure
 

Trouble Code: P2089



Inlet -A- Camshaft Position Control Circuit High Bank 1

Possible Causes:



Camshaft position control wiring harness connector is damaged or open
 
Camshaft adjustment valve has failed
 
Circuit is open or grounded
 
Assembly is damaged or it has failed (an open circuit)
 
DME power supply relay has failed
 

Trouble Code: P2090



Outlet -B- Camshaft Position Control Circuit Low Bank 1

Possible Causes:



Camshaft position control wiring harness connector is damaged or open
 
Camshaft adjustment valve has failed
 
Circuit is open or grounded
 
Assembly is damaged or it has failed (an open circuit)
 
DME power supply relay has failed
 

Trouble Code: P2091



Outlet -B- Camshaft Position Control Circuit High Bank 1

Possible Causes:



Camshaft position control wiring harness connector is damaged or open
 
Camshaft adjustment valve has failed
 
Circuit is open or grounded
 
Assembly is damaged or it has failed (an open circuit)
 
DME power supply relay has failed
 

Trouble Code: P2092



Inlet -A- Camshaft Position Control Circuit Low Bank 1

Possible Causes:



Camshaft position control wiring harness connector is damaged or open
 
Camshaft adjustment valve has failed
 
Circuit is open or grounded
 
Assembly is damaged or it has failed (an open circuit)
 
DME power supply relay has failed
 

Trouble Code: P2096



Post Catalyst Fuel Trim System Too Lean (Bank 1)

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor (behind catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
Check circuits for shorts to each other, ground or power
 

 
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