B1021 Engine Fault Code

Check Solution For B1021 OBD Code :

B1021 engine code seems a kind of body problem, we try to show one by one the meaning and the solution.
Brief explanation of the B1021 code and definition of B1021 is the bottom side.

B1021 Meaning :

b Body Code
Problem is antilock brake system, electronic suspension and steering systems.
1 MFG - Manufacturer Specific
0 Accelerator Pedal Position (APP) Sensor 1 Performance
2 BBV Sensor Circuit Low Voltage
1 Transmission

MFG - Manufacturer Specific codes, which have a '1' as their second digit to indicate they are unique to a particular vehicle make or model. These special codes were deemed necessary by the vehicle manufacturers so they could provide additional diagnostic information beyond the basic list of generic OBD II codes for all kinds of faults, not just emissions-related faults.

How To Fix B1021 ?

The engine system, in conjuction with the engine control module (ECM)/powertrain control module (PCM), activates the B1021 code solenoid valve to control oil pressure to the engine mechanism that is installed in the valve system to switch valve timing between Low and High.If the engine solenoid valve has an open or short circuit, a DTC is stored.

B1021 Code Description:

The poor running symptoms are consistent with a MAP sensor malfunction. In addition, in some cases, a bad MAP sensor will not throw a code. Again, the ELD code likely represents a separate wiring issue. When you see B1021 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.

BE CAREFUL !
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.

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