Engine Mount Control Circuit Open
The P0A14 code indicates an open circuit in the engine mount control system, typically found in hybrid or electric vehicles with active engine mounts. These mounts use solenoids or actuators to adjust stiffness for vibration damping. An open circuit means the electrical path is broken, preventing the mount from functioning properly, which can lead to increased engine vibration and noise.
01. Most Common Causes
- Faulty engine mount actuator/solenoid
- Open or shorted wiring in the control circuit
- Corroded or loose connector at the mount
- Failed engine control module (ECM) or hybrid control module
02. Symptoms You Will Notice
- Excessive engine vibration at idle or during acceleration
- Check Engine Light illuminated
- Increased cabin noise and harshness
- Possible drivability issues like rough idle
03. Step-by-Step Diagnosis
Step 1: Scan for additional codes and record freeze frame data.
Step 2: Visually inspect the engine mount wiring and connectors for damage, corrosion, or looseness.
Step 3: Use a multimeter to test continuity and resistance in the control circuit between the ECM and the mount actuator.
Step 4: If circuit is open, repair wiring or replace connector; if circuit is okay, test actuator resistance and replace if out of spec.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is generally safe for short distances, but prolonged driving may cause excessive vibration that can damage other components. It's best to repair promptly.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and repair, depending on whether it's a wiring fix or actuator replacement.