Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the computer in your car has detected a problem with the control system that opens and closes the exhaust valve in cylinder 6. It's like when a light switch is stuck in the 'on' position and won't turn off.
The P3448 code indicates that the powertrain control module (PCM) has detected a high voltage condition in the exhaust valve control circuit for cylinder 6.
The P3448 code is triggered when the PCM finds that the voltage in the exhaust valve control circuit for cylinder 6 is higher than expected. This could be due to an electrical fault such as a short circuit, or a problem with the actuator or wiring.
• Check Engine Light illuminated
• Reduced engine performance
• Engine misfire or rough idle
• Faulty exhaust valve control solenoid
• Wiring issues such as a short to voltage
• Faulty PCM
PCM: Powertrain Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for cylinder 6 exhaust valve control circuit.
• Test the exhaust valve control solenoid for proper operation.
• Repair or replace damaged wiring or connectors.
• Replace the exhaust valve control solenoid.
• Reprogram or replace the PCM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$150 - $500
Moderate
• Chrysler 300
• Dodge Charger
• Jeep Grand Cherokee
• Regular maintenance and inspections
• Keep electrical connections clean and secure
• Use high-quality replacement parts
Engine Performance
• Avoid driving the vehicle until repaired to prevent further damage.
• Consult a professional mechanic for accurate diagnosis.
Check with the vehicle manufacturer for warranty coverage on engine components.
This code has been associated with vehicles that use cylinder deactivation technology, often seen in engines with multiple cylinders.
Moderate – Should be addressed soon to avoid potential engine damage.
Driving with a malfunctioning exhaust valve can lead to increased emissions and potential engine damage.
• Engine running
• PCM monitoring exhaust valve control circuit
The exhaust valve control solenoid for cylinder 6 is typically located on or near the engine cylinder head.
Q: Can I drive my car with a P3448 code?
A: It's not recommended to drive with this code, as it can lead to engine performance issues and potential damage.
Q: How do I reset the P3448 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.
Fitment Required · Vehicle-fitment part
Commonly relevant for misfire, ignition-efficiency, and some drivability-related repairs.
Misfire and ignition-related faults commonly involve spark plugs as part of the repair path.
Check the correct plug type, gap, and engine application for your vehicle.
View options on Amazon
Fitment Required · Vehicle-fitment part
Relevant when the fault points toward ignition-coil performance or cylinder-specific ignition issues.
Some ignition faults involve coil performance or cylinder-specific coil problems.
Match the coil to your engine and confirm the failed component before ordering.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.