Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means there's a problem with the control system that opens and closes the exhaust valves for cylinder number 11 in your car's engine. It's like a switch that isn't working right.
The engine control module (ECM) has detected a high voltage condition in the exhaust valve control circuit for cylinder 11.
The P3488 code indicates that the ECM has found an issue with the voltage level in the exhaust valve control circuit for cylinder 11. This could mean the circuit is receiving too much voltage, which may be due to a short circuit, a faulty solenoid, or a problem with the wiring.
• Check Engine Light is on
• Poor engine performance
• Engine misfire
• Faulty exhaust valve control solenoid
• Short circuit in the wiring
• Faulty ECM
ECM: Engine Control Module
Solenoid: A device that converts electrical energy into mechanical movement
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for cylinder 11 exhaust valve control circuit.
• Test the exhaust valve control solenoid for proper operation.
• Replace the faulty exhaust valve control solenoid.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Socket set
$200 - $500
Moderate
• Dodge Ram 1500
• Chrysler 300
• Jeep Grand Cherokee
• Regular engine maintenance
• Inspect wiring and connectors periodically
• Use quality fuel to prevent deposits
Engine Performance
• Avoid driving the vehicle until the issue is fixed to prevent further damage.
• Consult a professional mechanic for accurate diagnosis and repair.
Check with your vehicle manufacturer for specific warranty coverage related to engine components.
This code is commonly associated with vehicles using advanced cylinder deactivation technology.
Moderate – It is recommended to address this issue soon to avoid potential engine damage.
Ignoring this code may lead to increased emissions and potential engine damage.
• Engine running
• Vehicle at operating temperature
The exhaust valve control solenoid for cylinder 11 is typically located on the engine cylinder head.
Q: Can I drive my car with a P3488 code?
A: It's not recommended to drive with this code as it can lead to engine damage.
Q: How do I reset the P3488 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
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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.
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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.
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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.
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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.