OBD Guide
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P16C5

Engine Mount Actuator Control Power Circuit Stuck On

P16C5 is an OBD-II diagnostic trouble code meaning: Engine Mount Actuator Control Power Circuit Stuck On. Common causes: motor mount drive malfunction, control circuit relay stuck. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Increased engine vibrations
  • Rattling sounds from the engine compartment
  • Unstable engine operation at idle
  • Check Engine indicator on the dashboard

Causes

  • Motor mount drive malfunction
  • Control circuit relay stuck
  • Short circuit in wiring harness
  • Problems with the engine control unit
  • Corrosion or poor contact in connectors

How to Fix

  1. Check the condition of the engine mount drive
  2. Check control circuit relays and fuses
  3. Check the wiring harness for short circuits.
  4. Check connectors and contacts for oxidation
  5. If necessary, replace the motor mount drive

Related codes

P16C4P16C6P16C7

FAQ

What does the P16C5 code mean?

P16C5 is an OBD-II diagnostic trouble code that indicates: Engine Mount Actuator Control Power Circuit Stuck On

What causes a P16C5 error code?

The most common causes of P16C5 include: Motor mount drive malfunction; Control circuit relay stuck; Short circuit in wiring harness; Problems with the engine control unit.

How do I fix a P16C5 diagnostic trouble code?

To fix P16C5: Check the condition of the engine mount drive. Check control circuit relays and fuses. Check the wiring harness for short circuits.. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P16C5?

Yes, but get it checked soon

How much does it cost to fix P16C5?

The estimated repair cost for P16C5 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat