AutoCodes – Fiat – P1046 Fiat

P1046 Fiat Code - Cylinder 1 Oil Supply Solenoid Valve Overcurrent

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: P1046 Fiat indicates Cylinder 1 Oil Supply Solenoid Valve Overcurrent.
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 2,321

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 Mar 25, 2024

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1046 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 Variable Valve Actuator (VVA) solenoid current feedback level in voltage is out of range.

OBDII Code P1046 Fiat - Cylinder 1 Oil Supply Solenoid Valve Overcurrent - AutoCodes.com — P1046 Fiat Code - Cylinder 1 Oil Supply Solenoid Valve Overcurrent

What does this mean?

What are the Possible Causes of the DTC P1046 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 P1046 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 P1046 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 P1046 Fiat code?

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Need Help with the Code?

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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 P1046 Fiat Code

1. What are the common symptoms of OBDII code P1046 in a Fiat, indicating an issue with the Cylinder 1 Oil Supply Solenoid Valve Overcurrent?

- Common symptoms include rough idling, engine misfires, loss of power, and illuminated Check Engine light.

2. What are the possible causes of OBDII code P1046 in a Fiat related to the Cylinder 1 Oil Supply Solenoid Valve Overcurrent?

- Possible causes include a faulty oil supply solenoid valve, damaged wiring or connectors, low engine oil level, or a problem with the engine control module.

3. How can I diagnose the issue causing OBDII code P1046 in my Fiat?

- Diagnosis involves using an OBDII scanner to retrieve the code, checking the oil supply solenoid valve and its wiring for damage, inspecting the engine oil level, and testing the engine control module.

4. Can I continue driving my Fiat with OBDII code P1046 present?

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

5. How can I repair OBDII code P1046 in my Fiat related to the Cylinder 1 Oil Supply Solenoid Valve Overcurrent?

- Repair involves replacing the faulty oil supply solenoid valve, repairing any damaged wiring or connectors, ensuring the engine oil level is correct, and resetting the fault code with an OBDII scanner.

6. Will resetting the OBDII code P1046 in my Fiat make the issue go away permanently?

- Resetting the code may clear the Check Engine light temporarily, but if the underlying issue causing the code is not addressed, it is likely to reappear. Proper diagnosis and repair are necessary for a permanent solution.

7. Is it possible to prevent OBDII code P1046 from occurring in my Fiat in the future?

- Regular maintenance, including checking and maintaining proper engine oil levels, inspecting electrical components for wear or damage, and addressing any engine performance issues promptly, can help prevent this code from reoccurring.

8. How much does it typically cost to repair OBDII code P1046 in a Fiat at a mechanic or dealership?

- Repair costs can vary depending on the specific issue causing the code, but replacing the oil supply solenoid valve and addressing related components may range from $200 to $500 at a mechanic or dealership.

9. Can a DIY enthusiast with automotive knowledge repair OBDII code P1046 in a Fiat on their own?

- Depending on the individual's skill level and access to tools, it may be possible to replace the oil supply solenoid valve and address related issues themselves. However, proper diagnosis and repair techniques are crucial to ensure the problem is fixed correctly.

10. How urgent is it to address OBDII code P1046 in my Fiat once it appears?

- It is recommended to address the issue promptly once the code appears to prevent further damage to the engine and ensure the vehicle's optimal performance. Driving with this code present can lead to more serious issues over time.