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2004 Subaru Impreza WRX STI Problems

Find the most common issues based on 2004 Subaru Impreza WRX STI owner complaints.
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Most Common 2004 Subaru Impreza WRX STI Problems

The Check Engine Light may illuminate because of a failed knock sensor. Although the sensor often tests okay, it can fail intermittently, while the vehicle is being driven.
Sometimes the Check Engine Light illuminates because the computer detects misfires. Subaru released an improved spark plug wire set to solve the problem. The ignition coil should also be inspected ...
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Known 2004 Subaru Impreza WRX STI Problems & Complaints

The Check Engine Light may illuminate because of a failed knock sensor. Although the sensor often tests okay, it can fail intermittently, while the vehicle is being driven.
Sometimes the Check Engine Light illuminates because the computer detects misfires. Subaru released an improved spark plug wire set to solve the problem. The ignition coil should also be inspected ...
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
Researching a 2004 Subaru Impreza WRX STI?
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