The P0381 trouble code is associated with the Glow Plug or Heater Indicator Circuit Malfunction, indicating an issue with the glow plug or heater indicator circuit.
Glow Plug/Heater Indicator Circuit Malfunction
Code symptoms P0381.
1. Illuminated “Check Engine” or “Service Engine Soon” light on the dashboard.
2. Difficulty starting the engine, especially in cold weather.
This code is common in brands such as:: Chevrolet, Renault, Ford, Toyota, Nissan, Mercedes Benz, Honda.
Causes of the code P0381.
1. Malfunctioning glow plug or heater indicator circuit.
2. Wiring or connection issues in the glow plug or heater indicator circuit.
3. Problems with the Engine Control Module (ECM).
Code Solutions P0381.
1. Inspect and, if necessary, replace the malfunctioning glow plug.
2. Check for any faults or damages in the wiring or connections of the glow plug or heater indicator circuit.
3. If ECM issues are suspected, consult a qualified technician for diagnosis and potential reprogramming or replacement.