Skip to content
Home DTC Codes P0856 Medium · 30-60min
P0856 Critical

OBD2 code P0856: Transmission - Gear/clutch selection

Gear or clutch selection fault.

ECU: TCM

Detected Root Component

Powertrain Component

Confidence level: low

Observed Symptoms

  • Hard or abrupt gear shifting
  • Transmission stuck in one gear
  • Transmission slippage

Possible Causes

  • Faulty solenoid valve
  • Faulty transmission speed sensor
  • Damaged transmission harness
  • Faulty TCM computer
Diagnostic Progress 0 %
Difficulty Medium
Est. time 30-60min
Tools Required 4 tool(s)

Tools Required

multimeter OBD scanner wiring diagram oscilloscope (optional)

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 P0856

What does code P0856 mean?

OBD2 code P0856: Transmission - Gear/clutch selection. Gear or clutch selection fault.

What are the symptoms of code P0856?

Code P0856 may cause: Hard or abrupt gear shifting, Transmission stuck in one gear, Transmission slippage. The intensity of these symptoms varies depending on the vehicle and driving conditions.

What causes code P0856?

The most common causes of code P0856 are: Faulty solenoid valve, Faulty transmission speed sensor, Damaged transmission harness, Faulty TCM computer. A proper OBD2 diagnostic will pinpoint the exact cause.

Is it serious to drive with code P0856?

Yes, code P0856 is critical (Critical). Avoid driving and consult a professional promptly to prevent major damage.

How do I fix code P0856?

Start by reading the code with an OBD2 scanner, then follow the interactive decision tree on this page. Priority causes to check: Faulty solenoid valve, Faulty transmission speed sensor, Damaged transmission harness, Faulty TCM computer. Difficulty: Medium · Estimated time: 30-60min.