U1507 Implausible engine temperature message data length received

U1507 code

U1507 code - Theory of operation the messages sent on the can bus are distinguished by an identifier (ID). Each can id is defined to contain a certain number of bytes. The transmission control module (TCM) verifies that it has received the proper number of bytes for each id. When monitored : Continuously with the ignition on, one valid can id received at least once, and no U0002 can bus off performance DTC present. Set condition this DTC when the TCM detects an incorrect can id from the ECM/PCM.

Possible causes U1507 code:

- TIPM Can Bus DTCs present 

- ECM/PCM DTCs present

- Transmission control module

Diagnostic test U1507 code

Step 1. Check for TIPM Can Bus DTCs

Check for any TIPM Can Bus DTCs present ? 

Yes, Perform NAG1 Transmission Verification Test.

No, go to step 2.

Step 2. Check if ECM/PCM DTCs are present

With the scan tool, read ECM/PCM DTCs.

Are there any ECM/PCM DTCs present ?

Yes, refer to DTC based diagnostics and perform the appropriate diagnostic procedure. Perform NAG1 Transmission Verification Test.

No, using the schematics as a guide, check the transmission control module (TCM) terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the TCM in accordance with the service information. Perform NAG1 Transmission Verification Test.

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