AutoCodes – Generic – P0029

P0029 Code - Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2

Quick Answer

The Continuously Variable Valve Timing (CVVT) system is installed to the chain sprocket of the exhaust camshaft. Common causes include Dirty engine oil, Low engine oil level, Faulty exhaust valve control solenoid. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0029 indicates Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2.
Common causes: Common causes include Dirty engine oil, Low engine oil level, Faulty exhaust valve control solenoid.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 15,530

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 04, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0029 Description

The Continuously Variable Valve Timing (CVVT) system is installed to the chain sprocket of the exhaust camshaft. This system controls the exhaust camshaft to provide the optimal valve timing. The Engine Control Module (ECM) controls the Oil Control Valve(OCV), based on the signals output from mass air flow, throttle position and engine coolant temperature. The CVVT controller regulates the intake camshaft angle using oil pressure through the OCV. As result, the relative position between the camshaft and the crankshaft becomes optimal, and the engine torque improves, fuel economy improves, exhaust emissions decrease under overall driving conditions.

OBDII Code P0029 - Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2 - AutoCodes.com — P0029 Code - Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2

What does this mean?

What are the Possible Causes of the DTC P0029?

Dirty engine oil
Low engine oil level
Faulty exhaust valve control solenoid
Exhaust valve control solenoid harness is open or shorted
Exhaust valve control solenoid circuit poor electrical connection

How to Fix the DTC P0029?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0029 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0029 code?

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Need Help with the Code?

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Information for Specific Makes

P0029 Hyundai — Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2
P0029 KIA — Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2
P0029 Subaru — Exhaust Valve Control Solenoid Circuit Range/Performance Bank 2

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.