Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's supercharger, which helps the engine go faster, has a part that's stuck and can't turn off when it's supposed to.
The supercharger disconnect clutch is supposed to engage and disengage the supercharger as needed. If it's stuck open, the supercharger is not engaging when it should.
The P25E9 code indicates that the supercharger disconnect clutch is not engaging properly due to being stuck in the open position. This can prevent the supercharger from providing additional air to the engine, affecting performance.
• Reduced engine performance
• Check Engine Light is on
• Unusual noises from the engine
• Faulty supercharger clutch
• Electrical issue with the clutch actuator
• Mechanical obstruction or damage
Supercharger: A device that increases the pressure of air entering the engine to boost power.
Clutch: A mechanical device that engages and disengages power transmission.
• Check for stored codes and freeze frame data.
• Inspect the supercharger clutch for mechanical issues.
• Test the electrical connections and actuator functionality.
• Replace the supercharger clutch if faulty.
• Repair or replace damaged wiring or connectors.
• Clear the codes and test drive to confirm the repair.
• OBD-II scanner
• Multimeter
• Basic hand tools
$300 - $800
Moderate
• Chevrolet Camaro
• Cadillac CTS-V
• Dodge Charger Hellcat
• Regular maintenance of the supercharger system
• Timely inspection of electrical connections
• Avoiding extreme driving conditions that may stress the supercharger
Engine Performance
• Have a professional inspect the vehicle if you notice performance issues.
• Avoid hard acceleration until the issue is resolved.
Check with your vehicle manufacturer for specific warranty coverage on the supercharger system.
This code is relatively uncommon and typically associated with high-performance vehicles equipped with superchargers.
Moderate – It affects performance but does not pose an immediate threat to vehicle safety.
Driving with performance issues may lead to further engine damage and is not recommended.
• Engine at operating temperature
• Vehicle in drive mode
The supercharger clutch is located near the front of the engine, typically integrated with the supercharger assembly.
Q: Can I drive with a P25E9 code?
A: It's possible to drive, but you may experience reduced performance. It's best to address the issue promptly.
Q: How do I know if my supercharger is not working?
A: You may notice a lack of power or hear unusual noises from the engine area.
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.