AutoCodes – Generic – P1034

P1034 Code - Cylinder 4 Oil Supply Solenoid Valve Driver Voltage Implausible

Quick Answer

Multi-Air is an electronically controlled variable intake valve phase and lift system. Common causes include Faulty Variable Valve Actuator (VVA) Solenoid, Variable Valve Actuator Solenoid harness is open or shorted, Variable Valve Actuator Solenoid circuit poor electrical connection. 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: P1034 indicates Cylinder 4 Oil Supply Solenoid Valve Driver Voltage Implausible.
Common causes: Common causes include Faulty Variable Valve Actuator (VVA) Solenoid, Variable Valve Actuator Solenoid harness is open or shorted, Variable Valve Actuator Solenoid circuit poor electrical connection.
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 15,547

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1034 Description

Multi-Air is an electronically controlled variable intake valve phase and lift system. Unlike conventional intake valve phase and lift system which controls all the cylinder intake valves simultaneously and in the same proportion; Multi-Air, through the use of an electronically controlled hydraulic link between the camshaft and intake valve, allows for each intake valve to be controlled independently. The valve lift and timing can be adjusted infinitely.
The Multi-Air valve train has a mechanical camshaft lobe acting on a hydraulic pump located between the camshaft intake lobe and the intake valve. The pump provides oil under pressure to a two-way electro-hydraulic solenoid valve called the Variable Valve Actuator (VVA) Solenoid. The VVA Solenoid is electronically controlled during the specific intake cam lobe event by the Powertrain Control Module (PCM). During the event, the VVA Solenoid is commanded to either hold oil pressure or bleed oil. The Variable Valve Actuator (VVA) Solenoid is a normally open solenoid. The PCM provides 12 volts to close the solenoid. The position of the VVA Solenoid determines the intake valve timing and lift. This change on valve action is similar to creating a change in the camshaft lobe profile affecting the lift and duration of the valve opening. The Diagnostic Trouble Code (DTC) will be set when the PCM recognizes an internal problem with the Solenoid Signal or Return circuit.

OBDII Code P1034 - Cylinder 4 Oil Supply Solenoid Valve Driver Voltage Implausible - AutoCodes.com — P1034 Code - Cylinder 4 Oil Supply Solenoid Valve Driver Voltage Implausible

What does this mean?

What are the Possible Causes of the DTC P1034?

Faulty Variable Valve Actuator (VVA) Solenoid
Variable Valve Actuator Solenoid harness is open or shorted
Variable Valve Actuator Solenoid circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P1034?

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 P1034 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 P1034 code?

Need more information on how to fix the P1034 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1034 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

P1034 Audi — Nitrogen Oxides Sensor Signal Outside Tolerance
P1034 Chrysler — Cylinder 4 Oil Supply Solenoid Valve Driver Voltage Implausible
P1034 Dodge — Cylinder 4 Oil Supply Solenoid Valve Driver Voltage Implausible
P1034 Fiat — Cylinder 4 Oil Supply Solenoid Valve Driver Voltage Implausible
P1034 Jeep — Cylinder 4 Oil Supply Solenoid Valve Driver Voltage Implausible
P1034 Volkswagen — Nitrogen Oxides Sensor Signal Outside Tolerance

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.

Frequently Asked Questions about P1034 Code

1. What are the common symptoms of OBDII code P1034?

- The common symptoms include rough idling, engine misfires, loss of power, and potentially stalling.

2. What causes the OBDII code P1034 to trigger?

- The code P1034 is triggered when the Cylinder 4 Oil Supply Solenoid Valve Driver Voltage is deemed implausible by the vehicle's onboard computer.

3. How serious is the OBDII code P1034?

- While the code itself may not cause immediate harm to the vehicle, it can lead to drivability issues and potentially affect the engine performance if left unresolved.

4. Can driving with the OBDII code P1034 cause further damage to the engine?

- Continuing to drive with the P1034 code may lead to poor engine performance, reduced fuel efficiency, and potentially cause damage to other engine components over time.

5. How can I diagnose the issue causing the OBDII code P1034?

- A thorough diagnostic scan using an OBDII scanner is recommended to pinpoint the exact cause of the code. Checking the wiring, connections, and the solenoid valve itself is also advisable.

6. What are some repair tips for resolving the OBDII code P1034?

- Repair tips may include checking and repairing any damaged wiring or connections related to the Cylinder 4 Oil Supply Solenoid Valve Driver, and if necessary, replacing the solenoid valve itself.

7. Can I reset the OBDII code P1034 without fixing the underlying issue?

- While it is possible to reset the code using an OBDII scanner, it is not recommended as the underlying issue causing the code will still persist and may lead to further problems.

8. Is it safe to continue driving with the OBDII code P1034 temporarily?

- It is generally not recommended to drive the vehicle with unresolved OBDII codes, as it can lead to worsening performance and potential long-term damage to the engine.

9. How much does it typically cost to repair the OBDII code P1034?

- The cost of repairing the P1034 code can vary depending on the underlying issue, but it may involve labor costs for diagnosis and repair, as well as potential parts replacement.

10. Can I prevent the OBDII code P1034 from occurring again in the future?

- Regular maintenance, including checking and replacing engine components as recommended by the manufacturer, can help prevent the recurrence of the P1034 code.