P1066 Jeep Code - Cylinder 1 Oil Supply Solenoid Valve Switch OFF Time Out Of Range
Quick Answer
Multi-Air is an electronically controlled variable intake valve phase and lift system. Common causes include Engine oil level low, Engine oil contaminated, Incorrect oil filter. 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
- P1066 Jeep indicates Cylinder 1 Oil Supply Solenoid Valve Switch OFF Time Out Of Range.
- Common causes
- Common causes include Engine oil level low, Engine oil contaminated, Incorrect oil filter.
- 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 P1066 Jeep 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 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 measures the time needed to turn on the VVA Solenoid. When the PCM recognizes that the VVA Solenoids switch off time is too fast or too slow a fault is set.
What are the Possible Causes of the DTC P1066 Jeep?
- Engine oil level low
- Engine oil contaminated
- Incorrect oil filter
- Insufficient oil pressure due to a mechanical failure in the oiling system
- Faulty Variable Valve Actuator (VVA) Assembly
How to Fix the DTC P1066 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 P1066 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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Frequently Asked Questions about P1066 Jeep Code
1. What does the OBDII code P1066 mean on a Jeep?
Code P1066 indicates that the Cylinder 1 Oil Supply Solenoid Valve Switch OFF time is out of range, meaning the engine control module (ECM) has detected an issue with the timing or functionality of the solenoid valve for cylinder 1.
2. What are the common symptoms of code P1066 in a Jeep?
Symptoms may include rough idling, reduced engine performance, poor fuel economy, an illuminated check engine light, and possibly engine misfires.
3. What causes the P1066 code to appear on a Jeep?
Common causes include a faulty oil control solenoid, low or dirty engine oil, clogged oil passages, damaged wiring or connectors, or a malfunctioning ECM.
4. Can low oil levels trigger the P1066 code on my Jeep?
Yes, low oil levels or dirty oil can cause the solenoid to malfunction, leading to the P1066 code. Always ensure your engine oil is clean and at the proper level.
5. How do I diagnose the P1066 code on a Jeep?
Start by checking the engine oil condition and level, inspecting wiring and connectors for damage, and testing the solenoid for proper operation. A scan tool can also help monitor the solenoid's behavior.
6. Is it safe to drive with the P1066 code on my Jeep?
Driving with the P1066 code is not recommended, as it can lead to engine performance issues and potential damage if the oil control system isn’t functioning properly.
7. How much does it cost to repair the P1066 code on a Jeep?
Repair costs vary depending on the issue but may range from $100 to $500, covering diagnostics, solenoid replacement, or oil system cleaning.
8. Can I fix the P1066 code on my Jeep myself?
If you're comfortable with basic car maintenance, you can check the oil level, clean the solenoid, or inspect wiring. For more complex repairs, it's best to consult a professional.
9. Does the P1066 code always mean the solenoid is bad?
No, the solenoid may not be the issue. It could also be caused by low oil pressure, dirty oil, clogged oil passages, or a wiring problem.
10. How can I prevent the P1066 code from occurring on my Jeep?
Regular oil changes, using the correct oil type, and inspecting the engine's electrical components can help prevent the P1066 code.
Discuss the causes and fixes for P1066 Jeep OBDII Code
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