OBD Guide
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P16C4

Engine Mount Actuator Control Power Circuit Stuck Off

P16C4 is an OBD-II diagnostic trouble code meaning: Engine Mount Actuator Control Power Circuit Stuck Off. Common causes: open or short circuit in the actuator power circuit, engine mount actuator malfunction. Estimated repair cost: $33–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–89 (est.)

Symptoms

  • Increased engine vibrations
  • Noise in the cabin at idle
  • Vibrations when engine load changes
  • Check Engine light comes on

Causes

  • Open or short circuit in the actuator power circuit
  • Engine mount actuator malfunction
  • Wiring Harness Problems
  • Control module malfunction

How to Fix

  1. Check the integrity of the actuator power circuit
  2. Check actuator resistance
  3. Inspect the wiring harness for damage
  4. Check control module
  5. Replace engine mount actuator if necessary

Related codes

P16C3P16C5

FAQ

What does the P16C4 code mean?

P16C4 is an OBD-II diagnostic trouble code that indicates: Engine Mount Actuator Control Power Circuit Stuck Off

What causes a P16C4 error code?

The most common causes of P16C4 include: Open or short circuit in the actuator power circuit; Engine mount actuator malfunction; Wiring Harness Problems; Control module malfunction.

How do I fix a P16C4 diagnostic trouble code?

To fix P16C4: Check the integrity of the actuator power circuit. Check actuator resistance. Inspect the wiring harness for damage. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P16C4?

Yes, but get it checked soon

How much does it cost to fix P16C4?

The estimated repair cost for P16C4 is $33–89. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat