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U1455 BMW Fault Code

Check U1455 OBD Fault Code Reason
Description:

Output Shaft Speed sensor circuit intermittent failure The output shaft speed sensor signal to the PCM is irregular or interrupted.
Harness connector not properly seated Harness intermittently shorted, or open Harness connector damaged OSS sensor damaged, or not installed properly Verify harness and connector integrity Verify OSS sensor proper installation.

U1455 Code Symptoms :

See U1455 in engine

When you turn on the ignition, the Service Engine Soon or Check Engine U1455 light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the U1455!

Diagnosis And Repairing U1455

U1455 OBD2 reports a sensor fault, replacement of the sensor is unlikely to resolve the underlying problem. The fault is most likely to be caused by the systems that the sensor is monitoring, but might even be caused by the wiring to the sensor itself.

How to fix U1455 code ?

See U1455 repair manual
  • EVAP system hose leaking
  • Faulty ignition coil (s)
  • Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
  • Incorrect fuel pressure

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source.

Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

BMW Cars that meet U1455 error