P0085

Symptoms

• Unstable engine operation at idle
• Reduced engine power
• Increased fuel consumption
• Check Engine Light Illuminates
• Difficulty starting the engine
• Rough engine operation under load
• Possible pops in the exhaust system

Causes

• Open or short circuit in solenoid wiring
• Exhaust valve solenoid malfunction
• Oxidation or corrosion of connector contacts
• Engine ECU malfunction
• Circuit ground or power problems
• Mechanical damage to the wiring harness
• Faulty relay or fuse in the circuit

How to Fix

1. Connect a diagnostic scanner and read all error codes
2. Check the condition of the valve control system fuses and relays
3. Visually inspect the solenoid wiring and connectors for damage.
4. Measure the supply voltage at the solenoid connector with the ignition on
5. Check the solenoid resistance with a multimeter (usually 10-30 ohms)
6. Clean the connector contacts from oxidation and corrosion
7. If necessary, replace the faulty solenoid
8. Check the integrity of the wiring from the ECU to the solenoid
9. Clear error codes and test drive to check

Related codes

Error P0085 by Vehicle Brand