U3487 BMW Fault Code
Check U3487 OBD Fault Code ReasonThe Throttle Position sensor signals the Engine Control Module as to the current position of the engine throttle valve.
The current throttle valve opening is based on the driver's input from the gas pedal.
The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.
U3487 Code Symptoms :
The rule of U3487 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of U3487.
Likewise, overriding the OBD system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.
Diagnosis And Repairing U3487
Parts or components should not be replaced with reference to only a U3487 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.
How to fix U3487 code ?
- Faulty Air Flow Meter
- 1Camshaft Position Sensor circuit poor electrical connection
- Faulty Intake Valve Timing Control Solenoid Valve
- Damaged ECM
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.
