AutoCodes – Jeep – P104A Jeep

P104A Jeep Code - Cylinder 3 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
P104A Jeep indicates Cylinder 3 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 403
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 25, 2024
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Code P104A Jeep 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 P104A Jeep - Cylinder 3 Oil Supply Solenoid Valve Overcurrent - AutoCodes.com
P104A Jeep Code - Cylinder 3 Oil Supply Solenoid Valve Overcurrent

What are the Possible Causes of the DTC P104A Jeep?

  • 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 P104A Jeep?

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 P104A Jeep 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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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 P104A Jeep Code

What does the OBDII code P104A mean on a Jeep?

The code P104A indicates an overcurrent issue with the Cylinder 3 Oil Supply Solenoid Valve, which helps regulate oil flow to the valve timing system.

What are the common symptoms of the P104A code on a Jeep?

Symptoms may include engine misfires, rough idling, decreased fuel efficiency, reduced engine performance, or an illuminated check engine light.

What causes the P104A code to appear on a Jeep?

Common causes include a faulty oil supply solenoid valve, damaged wiring or connectors, low oil levels, or contamination in the oil system.

Can low oil cause the P104A code on a Jeep?

Yes, low oil levels or dirty oil can lead to improper solenoid function and trigger the P104A code.

How can I diagnose the P104A code on my Jeep?

Use an OBDII scanner to confirm the code, inspect the wiring and connectors for damage, check oil levels and quality, and test the solenoid valve for proper operation.

Can I drive my Jeep with the P104A code?

Driving with this code is not recommended, as it can lead to further engine damage or performance issues.

How do I fix the P104A code on a Jeep?

Repairs may involve replacing the Cylinder 3 Oil Supply Solenoid Valve, repairing damaged wiring, or changing the oil and oil filter.

How much does it cost to fix the P104A code on a Jeep?

Costs vary depending on the repair needed, but replacing the solenoid valve typically ranges from $150 to $300, including parts and labor.

What tools are needed to fix the P104A code on a Jeep?

Basic tools like an OBDII scanner, socket set, and multimeter are often needed, along with replacement parts for the solenoid valve if necessary.

Can the P104A code be caused by electrical issues?

Yes, electrical problems such as short circuits, damaged wiring, or faulty connectors can cause overcurrent in the solenoid valve, triggering the code.

Discuss the causes and fixes for P104A Jeep OBDII Code

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