BMW Cars 1999-06

4.4L V8 - Auto 6

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Trouble Code: P1153



HO2S Heater Circuit Current 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
 

Trouble Code: P1155



HO2S Heater Circuit Current 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
 

Trouble Code: P1156



HO2S Heater Circuit Current Malfunction-Circuit Continuity

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
 

Trouble Code: P1157



HO2S Heater Circuit Current Malfunction-Heater Resistance

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
 

Trouble Code: P1158



Fuel Trim System Too Rich (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
 

Trouble Code: P1159



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
 

Trouble Code: P1160



Fuel Trim System Too Rich (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
 

Trouble Code: P1161



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
 

Trouble Code: P1174



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: P1175



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: 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: P1200



Fuel System Too Lean

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 pump not supplying enough fuel during high fuel demand conditions
 
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: P1201



Fuel System Too Rich

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 pump not supplying enough fuel during high fuel demand conditions
 
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: P1202



Fuel System Too Lean

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 pump not supplying enough fuel during high fuel demand conditions
 
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: P1203



Fuel System Too Rich

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 pump not supplying enough fuel during high fuel demand conditions
 
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: P1328



Knock Sensor 2 Signal High Input

Possible Causes:



Knock sensor circuit is open
 
Knock sensor is loose (tighten to 20 NM)
 
Contact between the knock sensor and cylinder block is dirty, corroded or greasy
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
Wrong kind of fuel used
 
A component in the engine compartment is loose or not properly secured
 

Trouble Code: P1332



Knock Sensor 4 Signal Low Input

Possible Causes:



Knock sensor circuit is open
 
Knock sensor is loose (tighten to 20 NM)
 
Contact between the knock sensor and cylinder block is dirty, corroded or greasy
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
Wrong kind of fuel used
 
A component in the engine compartment is loose or not properly secured
 

Trouble Code: P1333



Knock Sensor 4 Signal High Input

Possible Causes:



Knock sensor circuit is open
 
Knock sensor is loose (tighten to 20 NM)
 
Contact between the knock sensor and cylinder block is dirty, corroded or greasy
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
Wrong kind of fuel used
 
A component in the engine compartment is loose or not properly secured
 

Trouble Code: P1340



Crankshaft Position/Camshaft Sensor Signal Out of Sequence

Possible Causes:



Engine speed sensor has failed or is contaminated (metal filings)
 
Engine speed sensor-s wheel is damaged
 
Engine speed sensor circuit is shorted to the cable shield
 
Engine speed sensor circuit is open
 
DME is faulty
 
Camshaft position sensor is faulty
 

Trouble Code: P1342



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: P1344



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: P1346



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: P1348



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: P1350



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: 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: P1381



Control Module Self-Test, Knock Control Offset (Bank 1)

Possible Causes:



Knock sensor circuit is open
 
Knock sensor is loose (tighten to 20 NM)
 
Contact between the knock sensor and cylinder block is dirty, corroded or greasy
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
Wrong kind of fuel used
 
A component in the engine compartment is loose or not properly secured
 

Trouble Code: P1382



Control Module Self-Test, Knock Control Test Pulse (Bank 1)

Possible Causes:



Knock sensor circuit is open
 
Knock sensor is loose (tighten to 20 NM)
 
Contact between the knock sensor and cylinder block is dirty, corroded or greasy
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
Wrong kind of fuel used
 
A component in the engine compartment is loose or not properly secured
 

Trouble Code: P1384



Knock Sensor 3 Circuit Malfunction

Possible Causes:



Knock sensor circuit is open
 
Knock sensor is loose (tighten to 20 NM)
 
Contact between the knock sensor and cylinder block is dirty, corroded or greasy
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
Wrong kind of fuel used
 
A component in the engine compartment is loose or not properly secured
 

Trouble Code: P1385



Knock Sensor 4 Circuit Malfunction

Possible Causes:



Knock sensor circuit is open
 
Knock sensor is loose (tighten to 20 NM)
 
Contact between the knock sensor and cylinder block is dirty, corroded or greasy
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
Wrong kind of fuel used
 
A component in the engine compartment is loose or not properly secured
 

Trouble Code: P1386



Control Module Self-Test, Knock Control Circuit Baseline Test (Bank 1)

Possible Causes:



Knock sensor circuit is open
 
Knock sensor is loose (tighten to 20 NM)
 
Contact between the knock sensor and cylinder block is dirty, corroded or greasy
 
Knock sensor circuit is shorted to ground, or shorted to power
 
Knock sensor is damaged or it has failed
 
Wrong kind of fuel used
 
A component in the engine compartment is loose or not properly secured
 

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: P1411



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: P1420



Secondary Air Injector Valve Circuit Electrical Malfunction

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
 

 
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