U0402 CHEVROLET code

U0402: Invalid Data Received From Transmission Control Module OBD-II Trouble Code. The U0402 DTC is triggered when the data coming from the TCM does not match the preprogrammed parameters. Basically, the engine control unit cannot understand what the transmission control module is saying.

What is U0402?

OBD II fault code U0402 is a generic code that is defined as “Invalid Data Received from TCM”, and is set when the PCM (Powertrain Control Module) detects a signal from the TCM (Transmission Control Module) that is inaccurate, implausible, invalid, or falls outside of the expected range.

What does lost communication with TCM mean?

It means that the transmission control module is not communicating with one or more modules that are connected with it through the CAN bus/controller area network system.

What is fault code U0401?

Code U0401 stands for Invalid Data Received from ECM/PCM. The engine control module (or powertrain control module) is the computer than manages engine operation. The engine control module (ECM) receives input from sensors throughout the vehicle.

How do I fix code U0402?

What Repairs Will Fix U0402?

  1. Repair or replace any damage wiring and connectors.
  2. Replace TCM.
  3. Replace ECU.
  4. Install remanufactured transmission.

What is U0001 code?

Last month, CMS developed the first HCPCS code (U0001) to bill for tests and track new cases of the virus. This code is used specifically for CDC testing laboratories to test patients for SARS-CoV-2.

How do I reset my TCM?

To reset the TCM, I turn the key to the ON position, step on the accelerator pedal for 10 seconds, turn off the engine, release the accelerator pedal and wait 5 minutes for the engine to restart.

Will disconnecting battery reset TCM?

Will disconnecting the battery reset TCM? Simply disconnecting the battery would not return the TCM to its default settings, you would need to use a transmission scan method to do so. Disconnecting the battery terminals will not complete the phase or solve any gear shift issue.

What causes TCM to fail?

A transmission control module is an electronic device and a burnt circuit is the reason for its failure in most cases. It can be a faulty resistor or transistor on a printed circuit board. Any qualified technician or an experienced car mechanic can fix the problem.

How do I fix U0073 code?

Fixing a U0073 engine code is best left to the professionals. Repairs may involve diagnosing the various modules in your vehicle and replacing communication wires between modules and the CAN bus.

What does u3003 code mean?

battery voltage problem

This problem code indicates that there could be a battery voltage problem, specifically, the circuit voltage is below threshold. The first step in fixing the problem is using a scan tool, like the Bosch ADS 325 or 625, to check the vehicle’s system first regardless if you know what is going on with the vehicle.