P22C5

What it means

The drive circuit for the turbocharger compressor outlet valve (also called diverter valve or blow-off valve) is open. The valve releases boost pressure when the throttle closes to prevent compressor surge.

Is it safe to drive?

This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.

Most likely causes

• Solenoid winding open

  high

  One of the most commonly reported causes for this code — check this first.

• Pin pushed back out of connector body

  low

  Less common, but worth ruling out after the more likely causes.

• Cracked solder joint inside the module or sensor

  low

  Less common, but worth ruling out after the more likely causes.

Related help

• Full P22C5 diagnosis, causes & costs
• How to read check engine light codes
• Is it safe to drive with the light on?