P1585 — Volkswagen — Transmission Mount Valves Open Circuit
P1585 (Volkswagen): Transmission Mount Valves Open Circuit — what it means, the affected system and what to check before replacing parts.
Meaning, symptoms, causes and checks
Transmission Mount Valves Open Circuit. Source catalogue definition; confirm applicability using vehicle service information.
Affected system: Powertrain
Symptoms
- Increased transmission vibration felt in the cabin
- Harsh or jerky gear shifting
- Noticeable clunking noise during acceleration or deceleration
- Illuminated Malfunction Indicator Lamp (MIL)
- Reduced driving comfort
Possible causes
- Faulty transmission mount solenoid valve
- Damaged or frayed wiring harness leading to the mount
- Corroded electrical connector pins at the mount
- Blown fuse controlling the active mount circuit
- Internal failure of the transmission mount
What to check
- Inspect the electrical connector at the transmission mount for corrosion or bent pins
- Verify the wiring harness for continuity and shorts to ground using a multimeter
- Check the fuse box for any blown fuses related to transmission or engine mount systems
- Measure the resistance of the mount valve solenoid to confirm if it matches manufacturer specifications
- Test the mount valve operation using an OEM-compliant diagnostic scan tool