P3420 Chrysler Code - Cylinder 3 Deactivation Control Circuit High
Quick Answer
The P3420 Chrysler diagnostic trouble code (DTC) specifically relates to the Cylinder 3 Deactivation Control Circuit High. Common causes include Faulty wiring in the control circuit, Malfunctioning sensor, Failed solenoid. 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
- P3420 Chrysler indicates Cylinder 3 Deactivation Control Circuit High.
- Common causes
- Common causes include Faulty wiring in the control circuit, Malfunctioning sensor, Failed solenoid.
- 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 P3420 Chrysler Description
The P3420 Chrysler diagnostic trouble code (DTC) specifically relates to the Cylinder 3 Deactivation Control Circuit High. This code is typically found in vehicles with cylinder deactivation systems, which are designed to improve fuel efficiency by shutting down specific cylinders when they are not needed, such as during cruising or light load conditions. In this case, the code indicates that there is a high voltage condition detected in the control circuit for cylinder 3 deactivation.
Common Causes of P3420 Chrysler
- Faulty wiring in the control circuit
- Malfunctioning sensor
- Failed solenoid
- Issue with the engine control module (ECM)
- Corrosion or damage to electrical connections
Symptoms of P3420 Chrysler
- Rough engine idle
- Engine misfires
- Decreased fuel efficiency
- Check Engine Light illuminated
- Reduced power and acceleration
How to Fix P3420 Chrysler
- Begin by conducting a thorough inspection of the wiring and connections in the cylinder 3 deactivation control circuit.
- Test the sensor and solenoid for proper operation and replace if necessary.
- Check the ECM for any fault codes related to the cylinder deactivation system and address any issues found.
- Clear the DTC from the vehicle's memory and perform a test drive to ensure the code does not return.
- If the code persists, further diagnostic testing may be needed to pinpoint the exact cause of the high voltage condition.
Cost to Fix P3420 Chrysler
The typical repair costs for addressing a P3420 Chrysler DTC can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay anywhere from $200 to $500 for parts and labor. Keep in mind that diagnostic time and labor rates can fluctuate based on location, vehicle make and model, and the complexity of the repair. It's recommended to contact local auto repair shops for a more accurate estimate tailored to your situation.
Tech Notes for P3420 Chrysler
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