P104A Fiat 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 Fiat 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.
Code P104A Fiat 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 Variable Valve Actuator (VVA) solenoid current feedback level in voltage is out of range.
What are the Possible Causes of the DTC P104A 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 P104A 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 P104A 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.
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Frequently Asked Questions about P104A Fiat Code
1. What does the OBDII code P104A mean in a Fiat?
P104A indicates an overcurrent issue in the Cylinder 3 Oil Supply Solenoid Valve, meaning the circuit is drawing too much electrical current, potentially due to a fault in the solenoid or wiring.
2. What are the common symptoms of code P104A in a Fiat?
Common symptoms include engine misfires, reduced performance, rough idling, increased fuel consumption, or the Check Engine Light turning on.
3. What causes the P104A code to trigger in a Fiat?
The P104A code can be caused by a faulty oil supply solenoid valve, damaged wiring or connectors, low engine oil levels, or an electrical short in the circuit.
4. How can I diagnose the P104A code in my Fiat?
Start by inspecting the Cylinder 3 solenoid valve, checking for damaged wiring or loose connections. Use a multimeter to test the circuit for shorts and confirm the solenoid's functionality.
5. Can a dirty or clogged oil passage trigger the P104A code?
Yes, clogged oil passages can restrict oil flow to the solenoid, causing it to overwork and potentially trigger the code.
6. Is it safe to drive with the P104A code active in my Fiat?
Driving with this code may lead to performance issues or engine damage over time. It’s best to address the issue promptly to prevent further complications.
7. How do I fix the P104A code on my Fiat?
Repairs might include replacing the Cylinder 3 oil supply solenoid valve, repairing or replacing damaged wiring, cleaning clogged oil passages, or topping off the engine oil.
8. Can low engine oil levels cause the P104A code?
Yes, insufficient oil levels can lead to improper lubrication and operation of the oil supply solenoid valve, potentially triggering the code.
9. How much does it cost to repair the P104A code in a Fiat?
The cost depends on the exact issue but typically ranges from $150 to $400, including parts and labor, for solenoid replacement or wiring repairs.
10. Can I clear the P104A code by resetting the ECU?
While resetting the ECU might clear the code temporarily, the underlying issue must be resolved to prevent the code from returning.
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