Scania COO DTC 639 Clutch pedal sensor

COO Coordinator · Scania · 4 variants

Code 639 (decimal). Some diagnostic tools show it in hexadecimal as 027F.

In short

The clutch pedal sensor's 2 output signals (normal and redundant) are implausible in relation to each other.

Variant 1

Applies to: COO11 (COO)COO8 (COO)

What does Scania COO fault code 639 mean?

What causes Scania DTC 639?

What are the symptoms?

How to fix Scania COO fault code 639?

Read the full explanation with Premium

Causes, system reaction, symptoms and step-by-step repair instructions for every fault code are available to Premium members.

  • Full explanations of every code and brand
  • Causes, symptoms and repair steps
  • New brands and codes included
Get Premium – 7,50 € / month I already have an account

Yearly plan: pay 10 months, get 12. Cancel at any time.

Variant 2

Applies to: COO10 (COO)

Variant 3

Applies to: COO9 (COO)

Variant 4

Applies to: COO8

This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.

Code 639 in other Scania systems

Compare code 639 in every system →