How do i fix it please? Webaug 26, 2021 · 1 answer. 1. turn the ignition switch on (ii).

Question moved to model category. Ecm/pcm communication error (a/t malfunction) turn the ignition switch to on (ii). Question edited for clarity. Webit is normally a fault with bad coonection on the pins or a faulty power control module check the link below for trouble shooting this code. 2. clear the dtc with the hds. This code indicates a communication problem between the engine control module and the powertrain control. If all the lights are off on the.

2. clear the dtc with the hds. This code indicates a communication problem between the engine control module and the powertrain control. If all the lights are off on the.