BMW Cars 1999-06

3.2L L6 - Std 5

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Trouble Code: P1179



O2 Sensor Switching Time

Possible Causes:



Oxygen sensor heater for oxygen sensor (HO2S) before catalytic converter is faulty
 
O2S is contaminated (due to presence of silicone in fuel)
 
O2S signal and ground circuit wires crossed in wiring harness
 
O2S signal circuit is shorted to sensor or chassis ground
 
O2S element before the catalytic converter has failed (internal short condition)
 
Leaks present in the exhaust manifold or exhaust pipes
 

Trouble Code: P1186



O2 Sensor Heater Circuit (Bank 1-Sensor 1) Electrical Malfunction

Possible Causes:



HO2S heater power circuit is open
 
HO2S heater ground circuit is open
 
HO2S signal tracking (due to oil or moisture in the connector)
 
HO2S is damaged or has failed
 
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
 

Trouble Code: P1187



O2 Sensor Heater Circuit (Bank 1-Sensor 1) Electrical Malfunction

Possible Causes:



HO2S heater power circuit is open
 
HO2S heater ground circuit is open
 
HO2S signal tracking (due to oil or moisture in the connector)
 
HO2S is damaged or has failed
 
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
 

Trouble Code: P1188



Fuel System Malfunction (Cylinder Bank 1)

Possible Causes:



Air leaks after the MAF sensor, or leaks in the PCV system
 
Exhaust leaks before or near where the HO2S is mounted
 
Fuel injector(s) restricted or not supplying enough fuel
 
Fuel system not supplying enough fuel during high fuel demand conditions (e.g., the fuel pump may not supply enough fuel)
 
Leaking EGR gasket, or leaking EGR valve diaphragm
 
MAF sensor dirty (causes DME to underestimate airflow)
 
Vehicle running out of fuel or engine oil dip stick not seated
 

Trouble Code: P1189



Fuel System Malfunction (Cylinder Bank 1)

Possible Causes:



Air leaks after the MAF sensor, or leaks in the PCV system
 
Exhaust leaks before or near where the HO2S is mounted
 
Fuel injector(s) restricted or not supplying enough fuel
 
Fuel system not supplying enough fuel during high fuel demand conditions (e.g., the fuel pump may not supply enough fuel)
 
Leaking EGR gasket, or leaking EGR valve diaphragm
 
MAF sensor dirty (causes DME to underestimate airflow)
 
Vehicle running out of fuel or engine oil dip stick not seated
 

Trouble Code: P1338



Camshaft Position Sensor (Bank 1) Open/Short to B+

Possible Causes:



Faulty CPM sensor
 

Trouble Code: P1339



Camshaft Position Sensor (Bank 1) Open/Short to B+

Possible Causes:



Faulty CPM sensor
 

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: P1354



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: P1355



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: P1356



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: P1357



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: P1403



Evaporative Emission System Shut Off Valve

Possible Causes:



EVAP power supply circuit is open
 
EVAP solenoid control circuit is open or shorted to ground
 
EVAP solenoid control circuit is shorted to power (B+)
 
EVAP solenoid valve is damaged or it has failed
 
EVAP canister has a leak or a poor seal
 

Trouble Code: P1412



Secondary Air Pump Valve Plausibility

Possible Causes:



Connector to the secondary air injection valve is loose or disconnected
 
Secondary air injector valve circuit short
 
Secondary air injector valve circuit is open
 
Faulty secondary air injector valve
 

Trouble Code: P1413



Secondary Air Injector Pump Relay Control Circuit Signal Low

Possible Causes:



Connector to the secondary air injection valve is loose or disconnected
 
Secondary air injector valve circuit short
 
Secondary air injector valve circuit is open
 
Faulty secondary air injector valve
 

Trouble Code: P1414



Secondary Air Injector Pump Relay Control Circuit Signal High

Possible Causes:



Connector to the secondary air injection valve is loose or disconnected
 
Secondary air injector valve circuit short
 
Secondary air injector valve circuit is open
 
Faulty secondary air injector valve
 

Trouble Code: P1418



Secondary Air Pump Valve Plausibility

Possible Causes:



Connector to the secondary air injection valve is loose or disconnected
 
Secondary air injector valve circuit short
 
Secondary air injector valve circuit is open
 
Faulty secondary air injector valve
 

Trouble Code: P1500



Idle Air Control Valve Malfunction

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: P1501



Idle Air Control Valve Malfunction

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: P1502



Idle Air Control Valve Circuit Short to B+

Possible Causes:



Fuel delivery unit connector is loose or not attached
 
Fuse 18 cause a short to the transfer fuel pump or the O2S
 
Fuel pump has failed
 
Fuel pump relay circuit is shorted to ground, B+ or is open
 
Fuel Pump (FP) Relay not activated
 

Trouble Code: P1503



Idle Air Control Valve Circuit Short to Ground

Possible Causes:



Fuel delivery unit connector is loose or not attached
 
Fuse 18 cause a short to the transfer fuel pump or the O2S
 
Fuel pump has failed
 
Fuel pump relay circuit is shorted to ground, B+ or is open
 
Fuel Pump (FP) Relay not activated
 

Trouble Code: P1504



Idle Air Control Valve Circuit Continuity-Open Load

Possible Causes:



Fuel delivery unit connector is loose or not attached
 
Fuse 18 cause a short to the transfer fuel pump or the O2S
 
Fuel pump has failed
 
Fuel pump relay circuit is shorted to ground, B+ or is open
 
Fuel Pump (FP) Relay not activated
 

Trouble Code: P1506



Idle Air Control Valve Circuit Short to B+

Possible Causes:



Fuel delivery unit connector is loose or not attached
 
Fuse 18 cause a short to the transfer fuel pump or the O2S
 
Fuel pump has failed
 
Fuel pump relay circuit is shorted to ground, B+ or is open
 
Fuel Pump (FP) Relay not activated
 

Trouble Code: P1507



Idle Air Control Valve Circuit Short to Ground

Possible Causes:



Fuel delivery unit connector is loose or not attached
 
Fuse 18 cause a short to the transfer fuel pump or the O2S
 
Fuel pump has failed
 
Fuel pump relay circuit is shorted to ground, B+ or is open
 
Fuel Pump (FP) Relay not activated
 

Trouble Code: P1508



Idle Air Control Valve Circuit Continuity-Open Load

Possible Causes:



Fuel delivery unit connector is loose or not attached
 
Fuse 18 cause a short to the transfer fuel pump or the O2S
 
Fuel pump has failed
 
Fuel pump relay circuit is shorted to ground, B+ or is open
 
Fuel Pump (FP) Relay not activated
 

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: P1511



Differentiated Intake Manifold Control Circuit Electrical

Possible Causes:



Leaky vacuum reservoir, vacuum lines loose or damaged
 
Vacuum solenoid or vacuum actuator is damaged
 
IMRC actuator cable/gears are seized, or the cables are improperly routed or seized
 
IMRC housing return springs are damaged or disconnected
 
Lever/shaft return stop may be obstructed or bent, or the lever/shaft wide open stop may be obstructed or bent, or the IMRC lever/shaft may be sticking, binding or disconnected
 
IMRC control circuit open, shorted or the VPWR circuit is open
 

Trouble Code: P1526



Camshaft Control Circuit 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: 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: P1634



Throttle Valve Adaptation Spring Test Failed (Bank 1)

Possible Causes:



Plate is sticking
 
Defective return spring
 
DVE electrical activation defective.
 
Throttle position sensor wiring may have shorted
 
Throttle valve is contaminated with foreign objects
 

Trouble Code: P1636



Throttle Valve Position Control, Range Check (Bank 1)

Possible Causes:



TP sensor signal circuit is open (inspect wiring & connector)
 
TP sensor signal circuit is shorted to ground
 
TP sensor or module is damaged or it has failed
 
Throttle valve is damaged or dirty
 
Throttle valve control module is faulty
 

Trouble Code: P1637



Throttle Valve Position Control, Control Deviation (Bank 1)

Possible Causes:



TP sensor signal circuit is open (inspect wiring & connector)
 
TP sensor signal circuit is shorted to ground
 
TP sensor or module is damaged or it has failed
 
Throttle valve is damaged or dirty
 
Throttle valve control module is faulty
 

Trouble Code: P1638



Throttle Valve Position Control Throttle Stuck Temporarily (Bank 1)

Possible Causes:



TP sensor signal circuit is open (inspect wiring & connector)
 
TP sensor signal circuit is shorted to ground
 
TP sensor or module is damaged or it has failed
 
Throttle valve is damaged or dirty
 
Throttle valve control module is faulty
 

Trouble Code: P1639



Accelerator Pedal Position Sensor 1+2 Range/Performance

Possible Causes:



Ground between engine and chassis may be broken
 
Throttle position sensor may have failed
 
Accelerator Pedal Position Sensor 2 has failed
 
Throttle position sensor wiring may have shorted
 
Faulty voltage supply
 

Trouble Code: P1719



CAN Level Wrong Value

Possible Causes:



CAN data bus wires have short circuited to each other
 
ECU has failed
 
BUS system failure
 
Defective bus controller (EGS)
 

Trouble Code: P1720



CAN Message Timeout

Possible Causes:



CAN data bus wires have short circuited to each other
 
ECU has failed
 
BUS system failure
 
Defective bus controller (EGS)
 

Trouble Code: P1747



CAN-Bus Plausibility-Disabled

Possible Causes:



CAN data bus wires have short circuited to each other
 
ECU has failed
 
BUS system failure
 
Defective bus controller (EGS)
 

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
 

 
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