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Code P0085

Quick reference

P0085 at a glance

Plain-language meaning
This code means there's a problem with the electric part that helps control the exhaust valves on one side of the engine. It's like a switch not working properly for the car's exhaust system.
Urgency
Moderate – While the vehicle may still operate, it can lead to decreased performance and increased emissions.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Socket set

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means there's a problem with the electric part that helps control the exhaust valves on one side of the engine. It's like a switch not working properly for the car's exhaust system.

Explanation

The P0085 code indicates that the exhaust valve control solenoid circuit is experiencing low voltage or is not functioning correctly on bank 2 of the engine.

Technical description

The Exhaust Valve Control Solenoid is responsible for adjusting the timing of the exhaust valves. When the circuit is low, it means that the voltage or current in the solenoid circuit is below the expected level, which can affect engine performance and emissions.

Symptoms

• Check Engine Light is on

• Poor engine performance

• Increased emissions

Common Causes

• Faulty exhaust valve control solenoid

• Wiring issues such as short circuits or open circuits

• Faulty engine control module (ECM)

Glossary

Solenoid: An electromechanical device that converts electrical energy into mechanical movement.

Bank 2: Refers to the side of the engine opposite to bank 1, usually in V-type engines.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for damage or corrosion.

• Test the exhaust valve control solenoid for proper operation.

Repair procedures

• Replace the exhaust valve control solenoid if faulty.

• Repair or replace damaged wiring and connectors.

• Reprogram or replace the ECM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Socket set

Estimated repair cost

$150 - $400

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Honda Accord

• Ford F-150

Preventive measures

• Regular maintenance checks

• Ensure wiring is not exposed to excessive heat

• Use quality replacement parts

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the check engine light.

• Have the vehicle inspected by a professional if unsure.

• Regularly check and maintain engine components.

Warranty information

Check with the vehicle manufacturer for specific warranty coverage on emission-related components.

Historical data

This code has been associated with issues in vehicles with variable valve timing systems, particularly in models with higher mileage.

Urgency level

Moderate – While the vehicle may still operate, it can lead to decreased performance and increased emissions.

Testing conditions

• Engine at operating temperature

• Vehicle stationary

Component location

The exhaust valve control solenoid is typically located on the cylinder head of bank 2, often near the exhaust manifold.

FAQs

Q: Can I drive with a P0085 code?
A: It's possible to drive for a short period, but it's not recommended as it can lead to further engine issues.

Q: How can I reset the P0085 code?
A: After repairs, you can use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.

Optional diagnostic gear

Tools that may help diagnose P0085

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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