The Check Engine Light may illuminate because of low catalytic converter efficiency. This same issue may cause the car to fail the State Smog Test if one is required.
Problems for specific Subaru Forester years:
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Most reported Subaru Forester problems
Cooling System Problems Cause Head Gasket Failure
The head gasket has a high failure rate due to cooling system problems. Subaru is aware of the problem and has extended the warranty to 8 years/100k miles on many vehicles.
36 Reports
Engine Misfire Due to Failed Spark Plug Wires
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 for carbon tracks or short circuits between the contacts
25 Reports
Check Engine Light Due to Failed Knock Sensor
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.
24 Reports
Engine Misfire Due to Oil in Spark Plug Tubes
An oil leak can develop from the spark plug tube seals. Excess oil in the spark plug tubes can result in engine misfires and illumination of the Check Engine Light. Our technicians tell us that removing the valve cover and replacing the tube seals and cover gasket is necessary to correct this concern. Oil damaged spark plugs, ignition wires, and ignition coils will also require replacement.
23 Reports
Check Engine Light Due to Failed Front O2 Sensor
The front oxygen (air fuel ratio) sensor element may develop a crack, causing the Check Engine Light to illuminate. Subaru has recalled certain models to replace sensors that may fail. The Subaru service program number is WXW-80, this is not a government mandated recall.
14 Reports
Engine Oil May Leak From Camshaft/Crankshaft Front Seals
Front engine oil leaks can develop from the camshaft seal and the crankshaft front seal. If one or more seals require replacement, it may be wise to consider replacing the timing belt as well. These seals are commonly inspected and replaced as needed as part of a timing belt service.
8 Reports
Improved clutch parts to correct clutch chatter
There have been reports of "clutch chatter," particularly when driving the vehicle from a cold start. If the issue was reported by the owner while the vehicle was still under warranty, the dealer may replace the clutch with improved parts.
8 Reports
Engine Oil Leak Form Pump Seal
The leak may develop from the oil pump seal. Our technicians prefer to use thread locker when replacing the seal to prevent the bolts from becoming loose again.
6 Reports
unstoppaple emergency flashers
First the parking lights would not go off-I pulled the fuse except when I needed them. Now my emergency flashers will not go off-I have to disconnect the battery to stop them.What is wrong? My wife thinks the thing is possessed.
2 Reports
Mass air flow sensor recall
Subaru issued a recall (WWG-90) because the mass air flow sensor has a manufacturing defect.
1 Report
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