BMW Cars 1999-06

4.8L V8 - Std 7

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Trouble Code: P2194



System Too Rich at Higher Load Bank 2

Possible Causes:



Evaporative Emission (EVAP) canister purge regulator valve is faulty
 
Exhaust system components are damaged
 
Fuel injectors are faulty
 
Fuel pressure regulator and residual pressure have failed
 
Fuel Pump (FP) in fuel tank is faulty
 
Intake system has leaks (false air)
 
Secondary Air Injection (AIR) system has an improper seal
 
Intake Manifold Runner Position Sensor has failed
 
Motor for intake flap is faulty
 
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: P2195



O2 Sensor Signal Stuck Lean Bank 1 Sensor 1

Possible Causes:



Engine oil level high
 
Camshaft timing error
 
Cylinder compression low
 
Exhaust leaks in front of O2S
 
EGR valve is stuck open
 
EGR gasket is leaking
 
EVR diaphragm is leaking
 
Damaged fuel pressure regulator or extremely low fuel pressure
 
O2S circuit is open or shorted in the wiring harness
 
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
 
Air leaks after the MAF sensor
 
PCV system leaks
 
Dip stick not seated properly
 

Trouble Code: P2196



O2 Sensor Signal Stuck Rich Bank 1 Sensor 1

Possible Causes:



Engine oil level high
 
Camshaft timing error
 
Cylinder compression low
 
Exhaust leaks in front of O2S
 
EGR valve is stuck open
 
EGR gasket is leaking
 
EVR diaphragm is leaking
 
Damaged fuel pressure regulator or extremely low fuel pressure
 
O2S circuit is open or shorted in the wiring harness
 
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
 
Air leaks after the MAF sensor
 
PCV system leaks
 
Dip stick not seated properly
 

Trouble Code: P2197



O2 Sensor Signal Stuck Lean Bank 2 Sensor 1

Possible Causes:



Engine oil level high
 
Camshaft timing error
 
Cylinder compression low
 
Exhaust leaks in front of O2S
 
EGR valve is stuck open
 
EGR gasket is leaking
 
EVR diaphragm is leaking
 
Damaged fuel pressure regulator or extremely low fuel pressure
 
O2S circuit is open or shorted in the wiring harness
 
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
 
Air leaks after the MAF sensor
 
PCV system leaks
 
Dip stick not seated properly
 

Trouble Code: P2198



O2 Sensor Signal Stuck Rich Bank 2 Sensor 1

Possible Causes:



Engine oil level high
 
Camshaft timing error
 
Cylinder compression low
 
Exhaust leaks in front of O2S
 
EGR valve is stuck open
 
EGR gasket is leaking
 
EVR diaphragm is leaking
 
Damaged fuel pressure regulator or extremely low fuel pressure
 
O2S circuit is open or shorted in the wiring harness
 
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
 
Air leaks after the MAF sensor
 
PCV system leaks
 
Dip stick not seated properly
 

Trouble Code: P2228



Barometric Circuit Low

Possible Causes:



Sensor has deteriorated (response time too slow) or has failed
 
MAP sensor signal circuit is shorted to ground
 
MAP sensor circuit (5v) is open
 
MAP sensor is damaged or it has failed
 
BARO sensor signal circuit is shorted to ground
 
BARO sensor circuit (5v) is open
 
BARO sensor is damaged or it has failed
 
Replace the DME
 

Trouble Code: P2229



Barometric Circuit High

Possible Causes:



Sensor has deteriorated (response time too slow) or has failed
 
MAP sensor signal circuit is shorted to ground
 
MAP sensor circuit (5v) is open
 
MAP sensor is damaged or it has failed
 
BARO sensor signal circuit is shorted to ground
 
BARO sensor circuit (5v) is open
 
BARO sensor is damaged or it has failed
 
Replace the DME
 

Trouble Code: P2231



O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2234



O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 2 Sensor 1

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2237



O2S Sensor Positive Current Control Circuit/Open Circuit (Bank 1 Sensor 1)

Possible Causes:



Check plugs
 
Check wiring harness
 
Replace sensor
 

Trouble Code: P2240



O2S Sensor Positive Current Control Circuit/Open Circuit (Bank 2 Sensor 1)

Possible Causes:



Check plugs
 
Check wiring harness
 
Replace sensor
 

Trouble Code: P2243



O2 Sensor Reference Voltage Circuit/Open Bank 1 Sensor 1

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2247



O2 Sensor Reference Voltage Circuit/Open Bank 2 Sensor 1

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2251



O2 Sensor Negative Voltage Circuit/Open Bank 1 Sensor 1

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2254



O2 Sensor Negative Voltage Circuit/Open Bank 2 Sensor 1

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2270



O2 Sensor Signal Stuck Lean Bank 1 Sensor 2

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2271



O2 Sensor Signal Stuck Rich Bank 1 Sensor 2

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2272



O2 Sensor Signal Stuck Lean Bank 2 Sensor 2

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2273



O2 Sensor Signal Stuck Rich Bank 2 Sensor 2

Possible Causes:



Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2400



EVAP Leak Detection Pump (LDP) Control Circuit Open

Possible Causes:



EVAP LDP power supply circuit is open
 
EVAP LDP solenoid valve is damaged or it has failed
 
EVAP LDP canister has a leak or a poor seal
 
EVAP canister system has an improper seal
 
Evaporative Emission (EVAP) canister purge regulator valve 1 has failed
 
Leak Detection Pump (LDP) is faulty
 
Aftermarket EVAP parts that do not conform to specifications
 
EVAP component seals leaking (i.e., leaks in the Purge valve, fuel tank pressure sensor, canister vent solenoid, fuel vapor control valve tube assembly or fuel vapor vent valve).
 

Trouble Code: P2401



EVAP Leak Detection Pump Control Circuit Low

Possible Causes:



EVAP LDP power supply circuit is open
 
EVAP LDP solenoid valve is damaged or it has failed
 
EVAP LDP canister has a leak or a poor seal
 
EVAP canister system has an improper seal
 
Evaporative Emission (EVAP) canister purge regulator valve 1 has failed
 
Leak Detection Pump (LDP) is faulty
 
Aftermarket EVAP parts that do not conform to specifications
 
EVAP component seals leaking (i.e., leaks in the Purge valve, fuel tank pressure sensor, canister vent solenoid, fuel vapor control valve tube assembly or fuel vapor vent valve).
 

Trouble Code: P2402



EVAP Leak Detection Pump Control Circuit High

Possible Causes:



EVAP LDP power supply circuit is open
 
EVAP LDP solenoid valve is damaged or it has failed
 
EVAP LDP canister has a leak or a poor seal
 
EVAP canister system has an improper seal
 
Evaporative Emission (EVAP) canister purge regulator valve 1 has failed
 
Leak Detection Pump (LDP) is faulty
 
Aftermarket EVAP parts that do not conform to specifications
 
EVAP component seals leaking (i.e., leaks in the Purge valve, fuel tank pressure sensor, canister vent solenoid, fuel vapor control valve tube assembly or fuel vapor vent valve).
 

Trouble Code: P2414



O2 Sensor Exhaust Sample Error Bank 1 Sensor 1

Possible Causes:



Intake Manifold Runner Position Sensor is damaged or has failed
 
Intake system has leaks (false air)
 
Motor for intake flap is faulty
 
Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2415



O2 Sensor Exhaust Sample Error Bank 2 Sensor 1

Possible Causes:



Intake Manifold Runner Position Sensor is damaged or has failed
 
Intake system has leaks (false air)
 
Motor for intake flap is faulty
 
Oxygen sensor (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (before catalytic converter) is faulty
 
Oxygen sensor heater (behind catalytic converter) is faulty
 
O2S circuit is open or shorted in the wiring harness
 

Trouble Code: P2418



Evaporative Emission System Switching Valve Control Circuit Open

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 purge solenoid valve is faulty
 

Trouble Code: P2419



Evaporative Emission System Switching Valve Control Circuit Low

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 purge solenoid valve is faulty
 

Trouble Code: P2420



Evaporative Emission System Switching Valve Control Circuit High

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 purge solenoid valve is faulty
 

Trouble Code: P2626



O2 Sensor Pumping Current Trim Circuit/Open Bank 1 Sensor 1

Possible Causes:



Check activation of Recirculation Pump Relay
 
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: P2629



O2 Sensor Pumping Current Trim Circuit/Open Bank 2 Sensor 1

Possible Causes:



Check activation of Recirculation Pump Relay
 
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: P3013



O2S Sensor Circuit Adaptation Value to High (Bank 2 Sensor 1)

Possible Causes:



O2S signal shorted to power circuit inside connector
 
O2S signal circuit shorted to ground or to system voltage
 
Check wiring harness
 
Replace control module
 

Trouble Code: P3014



O2S Sensor WRAF-IC Supply Voltage Too Low (Bank 1 Sensor 1)

Possible Causes:



Internal HW fault in control module
 
Replace control module
 

Trouble Code: P3015



O2S Sensor WRAF-IC Supply Voltage Too Low (Bank 2 Sensor 1)

Possible Causes:



Internal HW fault in control module
 
Replace control module
 

Trouble Code: P3016



O2 Sensor Calibration Resistance at WRAF-IC Plausibility Bank 1 Sensor 1

Possible Causes:



Oxygen sensor for oxygen sensor (O2S) 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: P3017



O2 Sensor Calibration Resistance at WRAF-IC Plausibility Bank 2 Sensor 1

Possible Causes:



Oxygen sensor for oxygen sensor (O2S) 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: P3018



O2S Sensor Lambda Controller Value Above Threshold due to Open Pumping Current Circuit (Bank 1 Senso

Possible Causes:



Internal HW fault in control module
 
Replace control module
 

Trouble Code: P3019



O2S Sensor Lambda Controller Value Above Threshold due to Open Pumping Current Circuit (Bank 2 Senso

Possible Causes:



Internal HW fault in control module
 
Replace control module
 

Trouble Code: P3020



O2S Sensor Signal Voltage Too Low During Coast Down Fuel Cut-Off Due to Open Pumping Current Circuit

Possible Causes:



Check plugs
 
Check wiring harness
 
Replace sensor
 

Trouble Code: P3021



O2S Sensor Signal Voltage Too Low During Coast Down Fuel Cut-Off Due to Open Pumping Current Circuit

Possible Causes:



Check plugs
 
Check wiring harness
 
Replace sensor
 

Trouble Code: P3022



O2S Sensor Disturbed SPI Communication to WRAF-IC (Bank 1 Sensor 1)

Possible Causes:



Internal HW fault in control module
 
Replace control module
 

Trouble Code: P3023



O2S Sensor Disturbed SPI Communication to WRAF-IC (Bank 2 Sensor 1)

Possible Causes:



Internal HW fault in control module
 
Replace control module
 

 
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