C1158 Trouble Code

View C1158 obd/2 error code description and symptoms. C1158 engine photo

Catalytic converters must be warm before they can work properly. On a cold start the PCM provides a rich mixture to keep the cold engine running.
All that extra fuel goes into the catalytic converter. But the exhaust isn't very hot, because, ah, the engine is pretty cold. GM has employed several strategies to fire up the catalytic converter quicker and reduce cold start emissions. One way is to use a secondary air pump that pumps outside air directly into the catalytic converter.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

Difficulty Level (Soso)
Level
Repair Time (30 Min.)
Time
Cost Prediction : $ 75-90

C1158 Error Code Repair Process :

When you turn on the ignition, the Service Engine Soon or Check Engine C1158 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 c1158 speed wheel sensor lf coherency fault 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 c1158 speed wheel sensor lf coherency fault.

Wrench Tool C1158 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 C1158

A common cause of code C1158 is the failure of C1158 Speed Wheel Sensor LF Coherency Fault, but there are several other possible causes as well, such as ;

C1158 code for all cars

You can view according C1158 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+C1158 Ac Acedes-magna +C1158 Gaz 61 +C1158 Jowett 9 +C1158 Vector W +C1158 Fiat Ecobasis

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