OBD Guide
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P155F

Throttle Valve Actuator 2 Limp Home Mode Initiated

P155F is an OBD-II diagnostic trouble code meaning: Throttle Valve Actuator 2 Limp Home Mode Initiated. Common causes: malfunction of the second throttle actuator, problems with wiring to the throttle actuator. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced engine power
  • Maximum speed limit
  • Check Engine Light Is On
  • Unstable operation at idle
  • Disabling comfort systems (cruise control, etc.)

Causes

  • Malfunction of the second throttle actuator
  • Problems with wiring to the throttle actuator
  • Mechanical damage to the throttle assembly
  • Throttle valve contamination
  • Engine control unit malfunction

How to Fix

  1. Diagnostics of the throttle control system
  2. Checking the condition of wiring and connectors
  3. Cleaning the throttle valve (if dirty)
  4. Replacing a faulty throttle actuator
  5. Programming/adaptation of a new drive

Related codes

P155EP1560P1561

FAQ

What does the P155F code mean?

P155F is an OBD-II diagnostic trouble code that indicates: Throttle Valve Actuator 2 Limp Home Mode Initiated

What causes a P155F error code?

The most common causes of P155F include: Malfunction of the second throttle actuator; Problems with wiring to the throttle actuator; Mechanical damage to the throttle assembly; Throttle valve contamination.

How do I fix a P155F diagnostic trouble code?

To fix P155F: Diagnostics of the throttle control system. Checking the condition of wiring and connectors. Cleaning the throttle valve (if dirty). For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P155F?

Limited driving only, diagnose soon

How much does it cost to fix P155F?

The estimated repair cost for P155F is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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