OBD Guide
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P151E

Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect

P151E is an OBD-II diagnostic trouble code meaning: Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect. Common causes: blind actuator malfunction, problems with wiring or connectors. Estimated repair cost: $28–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine cooling efficiency
  • Deterioration of aerodynamic characteristics
  • Radiator shutters do not respond to commands

Causes

  • Blind actuator malfunction
  • Problems with wiring or connectors
  • Engine control unit malfunctions
  • Mechanical damage to blinds
  • Software error in ECU

How to Fix

  1. Check the condition of the actuator
  2. Inspect wiring and connectors for damage
  3. Scan the system for other errors
  4. Check the operation of the blinds manually
  5. Update ECU software if necessary

Related codes

P151FP1520P1521

FAQ

What does the P151E code mean?

P151E is an OBD-II diagnostic trouble code that indicates: Active Grille Air Shutter Actuator 1 Signal Message Counter Incorrect

What causes a P151E error code?

The most common causes of P151E include: Blind actuator malfunction; Problems with wiring or connectors; Engine control unit malfunctions; Mechanical damage to blinds.

How do I fix a P151E diagnostic trouble code?

To fix P151E: Check the condition of the actuator. Inspect wiring and connectors for damage. Scan the system for other errors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P151E?

Yes, but get it checked soon

How much does it cost to fix P151E?

The estimated repair cost for P151E is $28–89. Actual cost depends on your vehicle, location, and labor rates.

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