AutoCodes – Fiat – P1035 Fiat

P1035 Fiat Code - Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit

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: P1035 Fiat indicates Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit.
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 1,231

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 P1035 Fiat 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 detects an open condition for the VVA Solenoid control.

OBDII Code P1035 Fiat - Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit - AutoCodes.com — P1035 Fiat Code - Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit

What does this mean?

What are the Possible Causes of the DTC P1035 Fiat?

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 P1035 Fiat?

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 P1035 Fiat 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 P1035 Fiat code?

Need more information on how to fix the P1035 Fiat code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1035 Fiat code diagnosed by a professional: Find a repair shop in your area

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 P1035 Fiat Code

1. What are common symptoms of OBDII code P1035 in a Fiat related to the Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit?

The common symptoms include rough idling, engine misfires, reduced engine performance, and in some cases, the Check Engine Light may illuminate.

2. What could cause the Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit error code in a Fiat?

Potential causes of this code may include a faulty solenoid valve, damaged wiring or connectors, low engine oil level, or a problem with the engine control module.

3. How can I diagnose the Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit issue in my Fiat?

Diagnosis typically involves inspecting the solenoid valve and its wiring, testing the electrical connections, checking the engine oil level, and using a scan tool to retrieve and clear the error code.

4. Can I continue driving my Fiat with the P1035 code related to the Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit?

It is not recommended to drive your vehicle with this code present, as it can lead to further engine damage and reduced performance. It's best to address the issue promptly.

5. Is it possible to repair the Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit problem in my Fiat by myself?

Depending on your skill level and access to tools, you may be able to address this issue yourself by replacing the solenoid valve, repairing damaged wiring, or addressing any other identified causes. However, professional assistance is recommended for more complex repairs.

6. How much does it typically cost to fix the OBDII code P1035 related to the Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit in a Fiat?

The cost of repair can vary depending on the exact cause of the issue and whether you choose to do the repair yourself or take your vehicle to a mechanic. Costs may range from a few hundred to over a thousand dollars.

7. Can a faulty Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit impact the overall performance of my Fiat's engine?

Yes, a faulty solenoid valve can affect the engine's oil supply, leading to poor lubrication, increased friction, and potential damage to engine components if not addressed promptly.

8. How urgent is it to address the OBDII code P1035 in a Fiat indicating a Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit?

It is recommended to address this issue as soon as possible to prevent further damage to the engine and ensure optimal performance of your Fiat.

9. Are there any preventive measures I can take to avoid encountering the Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit issue in my Fiat?

Regular maintenance, such as checking and changing engine oil as recommended, inspecting wiring harnesses for damage, and monitoring engine performance, can help prevent issues leading to this error code.

10. Can the OBDII code P1035 related to the Cylinder 1 Oil Supply Solenoid Valve Driver Open Circuit be intermittent or sporadic in nature?

Yes, the issue may sometimes be intermittent, with the error code appearing and disappearing sporadically. It is still important to diagnose and address the underlying problem to prevent potential long-term damage.