P104B Dodge Code - Cylinder 4 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
- P104B Dodge indicates Cylinder 4 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.
Code P104B Dodge Description
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.
What are the Possible Causes of the DTC P104B Dodge?
- 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 P104B Dodge?
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 P104B Dodge 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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Frequently Asked Questions about P104B Dodge Code
What does the OBDII code P104B mean on a Dodge?
The code P104B indicates that the voltage for the Cylinder 4 Oil Supply Solenoid Valve is out of range, which may affect the operation of the variable valve timing system.
What are the common symptoms of code P104B?
Symptoms may include a check engine light, rough idling, reduced engine performance, poor fuel economy, or difficulty starting the vehicle.
What causes the P104B code to appear?
Common causes include a faulty Cylinder 4 Oil Supply Solenoid Valve, damaged wiring or connectors, low engine oil levels, or contamination in the oil passages.
Can low oil levels trigger the P104B code?
Yes, insufficient oil levels or dirty oil can affect the operation of the solenoid valve and trigger this code.
How do I diagnose the P104B code?
Diagnosis involves checking the solenoid valve, inspecting the wiring and connectors for damage, verifying proper oil levels, and testing the circuit with a multimeter.
Can I continue driving with the P104B code?
Driving with this code is not recommended, as it may lead to further engine performance issues or potential damage to internal engine components.
How do I fix the P104B code?
Repairs may include replacing the Cylinder 4 Oil Supply Solenoid Valve, repairing damaged wiring, cleaning oil passages, or performing an oil change if needed.
How much does it typically cost to repair the P104B code?
Repair costs vary depending on the issue but may range from $150 to $400, including parts and labor, for solenoid replacement or wiring repairs.
Can a dirty oil filter cause the P104B code?
Yes, a clogged oil filter can restrict oil flow to the solenoid valve, leading to voltage issues and triggering the code.
Do I need special tools to fix the P104B code?
Basic tools like a multimeter and socket set may suffice, but advanced diagnostics may require a scan tool capable of reading live data and testing solenoids.
Discuss the causes and fixes for P104B Dodge OBDII Code
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