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Home DTC Codes P6818 Medium · 30-60min
P6818 Critical

OBD2 Code P6818: Powertrain System - Fault Detected

Powertrain fault detected by the computer.

ECU: BMS

Detected Root Component

Powertrain Component

Confidence level: low

Observed Symptoms

  • Hybrid fault light on
  • Loss of engine power
  • Reduced electrical autonomy

Possible Causes

  • Failed high voltage battery module
  • Damaged wiring
  • Faulty engine computer (ECU)
  • Faulty cooling system
Diagnostic Progress 0 %
Difficulty Medium
Est. time 30-60min
Tools Required 4 tool(s)

Tools Required

multimeter OBD scanner (bidirectional) wiring diagram test light

Interactive Diagnostic

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Diagnostic Result

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Parts likely to be the cause (Moteur (général))

Moteur (général)

Moteur (général)

Photo d'illustration : Moteur (général)

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Frequently asked questions about code P6818

What does code P6818 mean? ▾

OBD2 Code P6818: Powertrain System - Fault Detected. Powertrain fault detected by the computer.

What are the symptoms of code P6818? ▾

Code P6818 may cause: Hybrid fault light on, Loss of engine power, Reduced electrical autonomy. The intensity of these symptoms varies depending on the vehicle and driving conditions.

What causes code P6818? ▾

The most common causes of code P6818 are: Failed high voltage battery module, Damaged wiring, Faulty engine computer (ECU), Faulty cooling system. A proper OBD2 diagnostic will pinpoint the exact cause.

Is it serious to drive with code P6818? ▾

Yes, code P6818 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.

How do I fix code P6818? ▾

Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Failed high voltage battery module, Damaged wiring, Faulty engine computer (ECU), Faulty cooling system. Difficulty: Medium · Estimated time: 30-60min.