DTC P1643 BMW
Throttle Valve Actuator Start Test Amplifier Balancing Plausibility
Throttle Valve Actuator Start Test Amplifier Balancing Plausibility
Description
Engine started, and the battery voltage is greater than 7 volts, this fault is only diagnosed during the throttle valve’s adaptation phase. The fault during amplifier calibration leads to operation with unamplified signal from potentiometer 1. The throttl
Cause and Solution
TP sensor signal circuit is open (inspect wiring and connector)
TP sensor signal circuit is shorted to ground
TP sensor or module is damaged or it has failed
Throttle valve is damaged or dirty
Video Guide
Diagnostic Info
- DTC Code: P1643
- Brand: BMW