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 car's computer noticed something unusual when the car was trying to change gears from 5th to 4th. It's like when you're riding a bike and the chain doesn't move smoothly between gears.
The transmission control module (TCM) detects an issue with the gear ratio when shifting from 5th to 4th gear.
The P17EC code is triggered when the transmission control module (TCM) identifies a discrepancy in the expected gear ratio during the shift from 5th to 4th gear. This can be due to mechanical or electronic failures within the transmission system.
• Harsh shifting between gears
• Transmission slipping
• Check Engine Light on
• Faulty transmission solenoid
• Worn or damaged clutch pack
• Transmission fluid issues
Transmission Control Module (TCM): A computer that controls the transmission functions.
Solenoid: An electromechanical device that controls fluid flow in the transmission.
• Check for any other related codes.
• Inspect the transmission fluid level and condition.
• Test the transmission solenoids and sensors.
• Replace faulty transmission solenoid.
• Repair or replace the clutch pack.
• Flush and replace transmission fluid.
• OBD-II scanner
• Transmission fluid pressure tester
• Basic hand tools
$300 - $1500
Moderate
• Nissan Altima
• Infiniti Q50
• Nissan Maxima
• Regular transmission fluid changes
• Avoid aggressive driving
• Routine transmission inspections
Transmission Issue
• Avoid driving aggressively until the issue is fixed.
• Consult with a professional mechanic for accurate diagnosis.
Check with your vehicle manufacturer for powertrain warranty coverage.
This code has been more common in vehicles with CVT transmissions, particularly in models from the mid-2010s.
Moderate – Address the issue soon to prevent further transmission damage.
Driving with a transmission issue can lead to further damage and potential safety hazards.
• Vehicle must be at operating temperature.
• Perform tests on a flat, level surface.
The transmission is located underneath the vehicle, typically between the engine and the drive shaft.
Q: Can I drive with a P17EC code?
A: It's not recommended to drive for long periods with this code active, as it can cause further damage to the transmission.
Q: How can I prevent this code from appearing?
A: Regular maintenance, such as changing the transmission fluid and avoiding aggressive driving, can help prevent this issue.
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