DTC B1421 Dodge
Throttle Position Sensor(TPS) Input-Loss of Signal
Throttle Position Sensor(TPS) Input-Loss of Signal
Description
This code related to communication line between ECU and TCCU is set when CAN signal from ECU can’t received for more than 1sec or ECU internal error occur.
Cause and Solution
ECM, TCCU connector looseness and poor terminal to wire connection. CAN HIGH LOW circuit open short. APS(TPS) faulty. Faulty ECM . Faulty TCCU .
Video Guide
Diagnostic Info
- DTC Code: B1421
- Brand: Dodge