P2005
System
Powertrain (Diesel Emissions)
Scanner required
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Intake Manifold Runner Control Stuck Open (Bank 2)

Understand P2005, common causes, and the right TOPDON scanner to diagnose it.

Variable intake runner stuck open bank 2 — airflow and EGR interaction on some diesels.

Common symptoms

  • Loss of torque
  • Check engine light
  • Rough idle

Typical causes

  • Carboned runner flaps
  • Failed actuator bank 2
  • Vacuum leak to actuator

What scanner do you need?

Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Use live data and freeze frame to confirm the fault before replacing parts. ABS, SRS, and network U-codes usually require a full-system scanner.

Diagnostic tips

  • Record freeze frame data when the code first sets
  • Clear the code only after fixing the root cause
  • Check for related pending codes that point to a common issue
  • Verify battery voltage is above 12.4V before chasing sensor codes

Recommended TOPDON scanners

Frequently asked questions

Can I diagnose P2005 with a basic code reader?
P2005 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with P2005?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.