Search engine trouble codes.
Example: P0120
P0421 Toyota Bb engine code seems a kind of powertrain problem, we try to show one by one the meaning and the solution.
Brief explanation of the P0421 Toyota Bb code and definition of P0421 Toyota Bb is the bottom side.
| p |
Powertrain Code Problem is related engine, transmission and emissions systems. |
| 0 | SAE - Generic |
| 4 | Transmission |
| 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 P0421 Toyota Bb ?
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. |
The engine system, in conjuction with the engine control module (ECM)/powertrain control module (PCM), activates the P0421 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. When you see P0421 Toyota Bb engine fault code on your engine code reader this description will help you.
| P Codes | List of all Powertrain 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 P 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.
