AutoCodes – Fiat – P1045 Fiat

P1045 Fiat Code - Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range

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: P1045 Fiat indicates Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range.
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 834

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 P1045 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 calculates that the delay in the measurement of current samples is greater that the required sampling period.

OBDII Code P1045 Fiat - Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range - AutoCodes.com — P1045 Fiat Code - Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range

What does this mean?

What are the Possible Causes of the DTC P1045 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 P1045 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 P1045 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 P1045 Fiat code?

Need more information on how to fix the P1045 Fiat code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P1045 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 P1045 Fiat Code

1. What are the common symptoms of OBDII code P1045 in a Fiat related to the Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range?

- The common symptoms include rough idling, engine misfires, poor acceleration, and potentially a drop in fuel efficiency.

2. What are the possible causes of OBDII code P1045 in a Fiat indicating an issue with the Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range?

- The causes may include a faulty oil supply solenoid valve, wiring issues, poor electrical connections, or a problem with the engine control module.

3. How can I diagnose the OBDII code P1045 in my Fiat that points to Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range?

- Diagnosis typically involves using an OBDII scanner to retrieve the code, followed by checking the solenoid valve, inspecting the wiring, and testing the voltage readings.

4. Can I continue to drive my Fiat with OBDII code P1045 related to the Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range?

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

5. How do I repair OBDII code P1045 in my Fiat related to the Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range?

- The repair process may involve replacing the faulty oil supply solenoid valve, repairing any damaged wiring, ensuring proper electrical connections, and clearing the trouble code.

6. Are there any tips to prevent OBDII code P1045 from reoccurring in my Fiat after repair?

- To prevent the code from reoccurring, it is essential to perform regular maintenance, address any underlying issues promptly, and follow the manufacturer's recommended service intervals.

7. Can a DIY enthusiast fix OBDII code P1045 in a Fiat indicating Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range?

- While some individuals with automotive repair experience may be able to address this issue, it is recommended to consult a professional mechanic for proper diagnosis and repair.

8. Is OBDII code P1045 in a Fiat related to Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range a common issue?

- This particular OBDII code may occur in Fiat vehicles, but its frequency can vary depending on factors such as vehicle age, maintenance history, and driving conditions.

9. How long does it typically take to repair OBDII code P1045 in a Fiat associated with Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range?

- The repair time can vary based on the exact cause of the issue, but it may take a few hours to a full day to diagnose, repair, and test the system thoroughly.

10. What is the cost to fix OBDII code P1045 in a Fiat related to Cylinder 1 Oil Supply Solenoid Valve Voltage Out Of Range?

- The cost of repair can vary depending on the extent of the issue, parts needed, labor rates, and whether the repair is done at a dealership or an independent repair shop.