Search engine trouble codes.
Example: P0120
B0021 Chevrolet Four Ninety engine code seems a kind of body problem, we try to show one by one the meaning and the solution.
Brief explanation of the B0021 Chevrolet Four Ninety code and definition of B0021 Chevrolet Four Ninety is the bottom side.
| b |
Body Code Problem is antilock brake system, electronic suspension and steering systems. |
| 0 | SAE - Generic |
| 0 | Fuel And Air Metering |
| 2 | Air Conditioning (A/C) Clutch Feedback Circuit High Voltage |
| 1 | TFP Valve Position Switch-Drive Without Drive Ratio |
SAE - Generic codes, which have a '0' as their second digit to indicate they are common to all makes and models of vehicles. These are the codes that are required for basic emissions fault diagnosis.
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How To Fix B0021 Chevrolet Four Ninety ?
The oxygen (02) sensors on your car measure the oxygen in the exhaust to determine how rich or lean the ratio of fuel and air are in the cylinders. Optimizing this mixture means better fuel economy and fewer exhaust emissions. |
Deactivation of cylinders is achieved by releasing a synchroniser pin that normally interlocks the cam follower and rocker arms. B0021 code resolves the synchroniser pin is released using hydraulic pressure which is controlled by a dedicated solenoid. When you see B0021 Chevrolet Four Ninety engine fault code on your engine code reader this description will help you.
| B Codes | List of all Body codes. |
Final Step: In the definitions listed below, there is a test drive recommended after you've completed any repairs to see if the condition is fixed. Before you take a test drive after a repair, always erase the B Code(s) first. This will turn the check engine light off and then you will know if the check engine light returns, you've got further diagnostics to complete.
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This engine code information is presented for information purposes only. This is not intended as repair advice and we are not responsible for any actions you take on any vehicle.
