C0958 Code:

OBD-II Diagnostic Chassis (C) Trouble Code

Possible Cause

C0958 code applies to vehicles equipped with dual clutch adaptive transmissions, automated manual transmissions, manual transmissions and automatic transmissions. Technicians also report the presence of excessive corrosion in the sensor connector as the cause of this code being stored.

Common Symptoms

  1. There are several tools which will be instrumental in attempting to successfully diagnose the conditions which contribute to this code being stored
  2. Look for shorted or burned wiring and replace circuitry and connectors as required
  3. Intermittent conditions can prove to be quite a challenge to diagnose and in extreme cases may have to be allowed to worsen before a correct diagnosis can even be attempted
  4. To perform a thorough diagnosis, any transmission leaks should be repaired and the transmission should be filled with the proper amount and type of fluid (if the fluid smells really "burnt" and you are experienced enough to detect it, you may go ahead and condemn the transmission)

Similar Problems

IC Module 4X Ref Circuit Intermittent, No Pulses
Low Coolant Circuit
Kick-Down Switch Failed Short

C0958 Troubleshooting

If this is the case with the code, you will be hearing very loud noises, like explosions, from the rear of the vehicle upon acceleration. Firstly check the carburetor to ensure that the fuel and air combination are properly balanced. If these settings are correct, then thoroughly inspect the distributor cap for any cracks or hairline splits, as this can produce a backfire. Move on to the spark plugs and ensure that they are clean and undamaged and inspect the engine gaskets for any sign of damage, as they are responsible for ensuring the correct gas exchange within the engine. C0958 OBD2 specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.

How to turn off C0958 check engine light ?

There are two ways to turn off the check engine light:

A repair technician can do so once repairs have been made.
The OBD II can automatically turn it off when it fails to detect the problem after several diagnostic cycles.

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