C0872 BMW Fault Code
Check C0872 OBD Fault Code ReasonThe issue covered by the bulletin involves a power steering noise/whine or fluid leak from the power steering pump, gear or high pressure side power steering hose during extreme low outdoor temperature operation.
C0872 Code Symptoms :
If your vehicle failed a C0872 test and the C0872 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses C0872 a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look : Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.
Diagnosis And Repairing C0872
Parts or components should not be replaced with reference to only a C0872 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.
How to fix C0872 code ?
- Continuous oil flow to the VCT piston chamber
- 1Camshaft Position Sensor circuit poor electrical connection
- Damaged VCT phaser
- Incorrect Positive Crankcase Ventilation (PCV) hose connection
On some transmissions, such as automated manual transmissions or automatic transmissions with manual mode, the GSP switch lets the TCM know whether or not the driver has selected automatic or manual function.
On manual transmissions, the GSP switch informs the TCM which gear the driver is selecting, and may function as a neutral safety switch, depending on system design. The TCM also uses the gate select position switch to monitor transmission operation. For example, if the driver selects manual mode and selects 3rd gear on an automatic transmission, the TCM may monitor speed sensors to detect clutch and brake slippage.
