C1989 Trouble Code

View C1989 obd/2 error code description and symptoms. C1989 engine photo

The Transmission Range Sensor (also referred to as the PRNDL input an/or neutral safety switch) tells the transmission control module (TCM) an the engine control module (PCM) that the transmission is in park, reverse, neutral, drive, low, 2nd, 3rd etc. It is attached directly to the manual valve of transmission, so when the shift lever is moved from park to drive, the Transmission Range Sensor communicates this critical information to the above mentioned vehicle control module systems.

To check for an open circuit, trace along the length of the transmission control circuit, checking for breaks in the wiring. Repair any broken wiring and make sure all connectors are fully seated and locked.Pay close attention to connectors, looking for corrosion, bent or broken pins, or moisture in the connector. Repair any connector issues even if they are not specifically part of the transmission control circuit as they may serve a function in providing power to the transmission control circuit.

C1989 Error Code Repair Process :

The rule of C1989 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 engine oil pressure sensor/switch circuit range/performance. Likewise, overriding the OBD C1989 error in 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.

C1989 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

Common Causes of C1989

A common cause of code C1989 is the failure of Engine Oil Pressure Sensor/Switch Circuit Range/Performance, but there are several other possible causes as well, such as ;

Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
Dirty Oil
1Camshaft Position Sensor circuit poor electrical connection
Spark plugs may be faulty

C1989 code for all cars

You can view according C1989 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C1989 Hyundai Azera 4

+C1989 Audi Ad

+C1989 Chevrolet Kalos

+C1989 Ferrari 255

+C1989 Bmw 1m

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