Skip to content
Home DTC Codes P8785 Medium · 30-60min
P8785 Critical

OBD2 Code P8785: 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 5 tool(s)

Tools Required

multimeter OBD scanner wiring diagram transmission fluid dipstick oscilloscope

Interactive Diagnostic

Answer each question to calculate your diagnostic score.

Diagnostic Result

0
certainty points

Recommended action:

Find the part:

Answer the questions above to get the result.

Was this diagnostic helpful?

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

Moteur (général)

Moteur (général)

Photo d'illustration : Moteur (général)

© DTC-Logic.com

Click on an image to enlarge

Frequently asked questions about code P8785

What does code P8785 mean?

OBD2 Code P8785: Powertrain System - Fault Detected. Powertrain fault detected by the computer.

What are the symptoms of code P8785?

Code P8785 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 P8785?

The most common causes of code P8785 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 P8785?

Yes, code P8785 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.

How do I fix code P8785?

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.