AutoCodes – Chrysler – P1040 Chrysler

P1040 Chrysler Code - Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground

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: P1040 Chrysler indicates Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground.
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 686

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 P1040 Chrysler 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 a short to ground in the Solenoid Signal or Return circuit.

OBDII Code P1040 Chrysler - Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground - AutoCodes.com — P1040 Chrysler Code - Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground

What does this mean?

What are the Possible Causes of the DTC P1040 Chrysler?

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 P1040 Chrysler?

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 P1040 Chrysler 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.

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Need Help with the Code?

Get the P1040 Chrysler 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 P1040 Chrysler Code

1. What are the common symptoms of OBDII code P1040 in a Chrysler related to the Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground?

The common symptoms include rough idling, engine misfires, decreased performance, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P1040 in a Chrysler related to the Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground?

Possible causes include a short to ground in the wiring harness, a faulty oil supply solenoid valve, a malfunctioning solenoid valve driver, or a problem with the Engine Control Module (ECM).

3. How can I diagnose OBDII code P1040 in a Chrysler related to the Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground?

Diagnosis typically involves using a scan tool to read the code, testing the wiring harness for shorts, checking the solenoid valve and driver for functionality, and inspecting the ECM for any issues.

4. Is it safe to continue driving my Chrysler with OBDII code P1040 related to the Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground?

It is not recommended to continue driving the vehicle with this code present, as it can lead to further engine damage and decreased performance.

5. How can I repair OBDII code P1040 in a Chrysler related to the Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground?

Repairing this code may involve repairing or replacing the wiring harness, replacing the oil supply solenoid valve, testing and replacing the solenoid valve driver, or reprogramming the ECM.

6. Can a DIY enthusiast fix OBDII code P1040 in a Chrysler related to the Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground?

While some simple tasks like checking the wiring harness for obvious issues can be done by a DIY enthusiast, diagnosing and repairing this code often requires specialized tools and expertise, so it is recommended to seek professional help.

7. How much does it typically cost to repair OBDII code P1040 in a Chrysler related to the Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground?

The cost of repairing this code can vary depending on the exact cause of the issue, but it may range from $200 to $800, including parts and labor.

8. Are there any preventive measures to avoid OBDII code P1040 in a Chrysler related to the Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground?

Regular maintenance, such as checking and replacing engine oil as recommended, can help prevent issues that may lead to this OBDII code.

9. Can OBDII code P1040 in a Chrysler related to the Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground affect fuel efficiency?

Yes, this code can affect fuel efficiency due to engine misfires and decreased performance, leading to higher fuel consumption.

10. How long does it take to repair OBDII code P1040 in a Chrysler related to the Cylinder 4 Oil Supply Solenoid Valve Driver Short To Ground?

The repair time can vary based on the exact cause of the issue and the availability of parts, but it typically takes a few hours to a full day to diagnose and fix this problem.