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2004 Chevrolet Cobalt P1158 Fault Code Check

When you check 2004 Chevrolet Cobalt car engine light came on code P1158 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Chevrolet manufacturer may have a different definition for the P1158 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P1158 2004 2004 Chevrolet Cobalt Code Clear

To solve P1158 2004 2004 Chevrolet Cobalt problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs

2004 Chevrolet Cobalt P1158 OBD-II Diagnostic Powertrain (P) Trouble Code Description

2004 Chevrolet Cobalt car P1158 OBD-II Trouble Code Lack Of HO2S22 Switch - Sensor Indicates Rich is one of the definitions for the P1158; however your vehicles manufacturer may have a different definition for the P1158 code. Please check below for you

Reason For 2004 Chevrolet Cobalt P1158 Code

The reason of 2004 Chevrolet Cobalt P1158 OBD-II Fault Code Check is P1158 Lack Of HO2S22 Switch - Sensor Indicates Rich.
P1158 Code Reason

2004 Chevrolet Cobalt P1158 Possibble Fix Ways :

The engine relies on the glow plugs to generate heat to help with the combustion cycle. Some engines only use the glow plugs when cold but others will allow the glow plugs to work when the ECU (vehicle's computer) needs them to be on to help with combustion. Problems in this area will cause diesel engine starting problems, uneven running and white smoke when the engine is cold.

While fuel economy was increased, acceleration was seriously compromised, and the loss of engine vacuum led to a dangerous loss of braking assist when the P1158 2004 2004 Chevrolet Cobalt code system was in four-cylinder mode. In addition to these issues, while the company proposed a hydraulically controlled system that could be switched from within the car, the version they implemented had to be manually changed in the engine compartment using hand tools.

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