What does code P1394 mean?

Q: What does code P1394 mean?

Wheel Speed Sensor 1 G-Sensor Circuit Intermittent. P1394 on a GM vehicle means the powertrain control module (PCM) has detected an intermittent fault in the circuit that carries the wheel speed signal from the right front wheel speed sensor to the electronic brake control module (EBCM). The PCM monitors this signal through the serial data line and flags the code when the signal drops out or becomes erratic for a fraction of a second, often without storing a hard failure.

DTC codes / GM codes / P1394

P1394 · GMWheel Speed Sensor 1 G-Sensor Circuit Intermittent

P1394 on a GM vehicle means the powertrain control module (PCM) has detected an intermittent fault in the circuit that carries the wheel speed signal from the right front wheel speed sensor to the electronic brake control module (EBCM). The PCM monitors this signal through the serial data line and flags the code when the signal drops out or becomes erratic for a fraction of a second, often without storing a hard failure.

SystemPowertrain

Code typeGM specific

SeverityMedium

Fix difficultyIntermediate

AreaIgnition system and misfire

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