Vehicle information
BYD f0 Automatic
Fault phenomenon
The vehicle will not move the D and R gears and the SVS light is illuminated
Fault analysis
- Clutch position sensor failure
- TCU failure
- Accumulator failure
- Valve body failure
- Related wiring harness malfunctions, etc.
Inspection step
The vehicle’s computer detects the TC U fault code as P290B02: Fault code undefined, and the meaning of this fault code was not found based on the available information.
Error code is P290B02: Clutch position sensor or wiring harness malfunction;
In the car in gear without any response, check the hydraulic oil pump relay and insurance, relay corrosion, and dealing with the reverse fault remains.
Measurement of the clutch position sensor found that the harness plug was corrosion, and broken, treatment and measurement of the voltage is normal, reversing the clutch actuator assembly troubleshooting.
Maintenance Summary
When troubleshooting, if there is a fault code, according to the fault code to query the maintenance manual related wiring diagrams and parts positioning diagram, can effectively improve the maintenance efficiency.
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