DTC Toyota P0201 Short Explanation
Channel: Maxidot Dodge
Date: 13/09/2020

The video focuses on the basic Toyota specific diagnostic error code.
Contents:
0:21 Basic DTC analysis according to OBD2 protocol standard.
1:48 Insight into programming
- an explanation of what a bit is and how a byte is formed
- decoding the Error Code to the base programming
2:58 A diagnostically understandable description of the Diagnostic Trouble Code
3:05 Basic error definition
- Possible causes or errors of the car and its parts describing the mentioned error

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Make:
Toyota
Code:
P0201
Definition:
Long-Term Fuel Trim, Signal Too High (Bank 2)
Description:
The engine control module (ECM) receives information from the heated oxygen sensor (HO2S) (bank 1) about the fuelorair mixture when idling and at both the upper and lower part-load range.If the fuelorair mixture deviates from λ=1, the short-term fuel trim will compensate for this by adjusting the injection time so that λ=1 is achieved.When the short-term fuel trim makes an adjustment,the integrator median must be adjusted by the long-term trim.The diagnostic trouble code (DTC) is stored when the long-term trim must be adjusted to almost maximum in the lower part load area.
Cause:
Intake air leakageAir leakage in the exhaust systemLow fuel pressureDamaged heated oxygen sensor (HO2S) (bank 2).