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TuningBot DTC Database · v4.37.15

P0382 Glow Plug/Heater Circuit B Malfunction

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainIgnitionOBD2

What P0382 means

P0382
Glow Plug/Heater Circuit B Malfunction Generic · ignition Data confidence 90%

The control module detected improper operation of the Glow Plug/Heater Circuit B.

Symptoms

  • Hard cold starting possible
  • MIL or glow indicator active
  • Possible white smoke at cold start

Possible causes

  • Wiring
  • glow plug relay
  • glow plugs
  • ECM

Recommended checks

  • Measure individual glow plug resistance
  • Check control module output and supply
  • Inspect wiring and connectors

Related and nearby codes

P03 range
P0300P0301P0302P0303P0304P0305P0306P0307P0308P0309P030AP030BP030CP030DP030EP030FP0310P0311

How to read P0382

P

Powertrain: engine, transmission and driveline systems.

0

Generic SAE-standard code: same meaning on every make.

382

Specific fault index within the subsystem.

Frequently asked questions about P0382

What does P0382 mean?

Glow Plug/Heater Circuit B Malfunction. The control module detected improper operation of the Glow Plug/Heater Circuit B.

Is P0382 generic or manufacturer-specific?

P0382 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P0382 at file level?

If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.

Other file services

Stage 1/2/3 TuningDPF RemovalEGR RemovalAdBlue / SCR RemovalDTC RemovalIMMO OFFSpeed Limiter (Vmax)

Understand the system behind this code: Diagnostic Strategy and DTC Logic

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