What does code P1842 mean?

Q: What does code P1842 mean?

Check DTC Memory Of Instrument Panel ECU. P1842 is a Volkswagen-specific informational code that the transmission control module (TCM) sets when it detects a fault stored in the instrument panel control module, which is the dashboard cluster that also acts as the gateway between CAN (Controller Area Network) buses. The TCM is not reporting a fault of its own; it is telling you to check the instrument cluster's diagnostic trouble codes because a problem there is affecting shared data.

DTC codes / Volkswagen codes / P1842

P1842 · VolkswagenCheck DTC Memory Of Instrument Panel ECU

P1842 is a Volkswagen-specific informational code that the transmission control module (TCM) sets when it detects a fault stored in the instrument panel control module, which is the dashboard cluster that also acts as the gateway between CAN (Controller Area Network) buses. The TCM is not reporting a fault of its own; it is telling you to check the instrument cluster's diagnostic trouble codes because a problem there is affecting shared data.

SystemPowertrain

Code typeVolkswagen specific

SeverityMedium

Fix difficultyProfessional

AreaTransmission

Guidance is general and written for Volkswagen vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.