U1221 I HAVE 2005 SUBARU OUTBACK 2.5L REGULAR ENGINE I CHANGE USE ECM AND THE CAR IS RUN BUT I HAVE CHECK ENGINE LIGHT IS FLASHING AND I HAVE TO MANY CODE . P1518. P0851-52-53-54-55-57-AND CODE U1221 8221 U THINK NEED REFLASH THE ECM

SOURCE: 1997 subaru outback legacy overheating

I've had the same problem all year. I've had four different mechanics look at this car - 97 legacy with 2.5. I've had the coolant seals replaced, the radiator cap, the thermostat, the water pump - all to no avail. I've realized now that it only overheats shortly after running sustained high rpm's. Recently the last mechanic mentioned the bleeder valve (I didn't know it had one and think maybe he didn't know either - not a subaru mechanic). Recently it overheated again (again sustained high rpm's - apparently more prone to produce air in the system), I sat the vehicle on an incline (raising the bleeder valve to be the highest point) and let the car warm up and run for half an hour. Now 300 miles and no overheat. I went through alot with this car to get to this point. Unbelievable.

Steve Allison

• 5569 Answers
• Posted on Sep 10, 2009

SOURCE: I have a 1999 Subaru Outback Impreza Sport. The

If you have any of the large chain auto parts stores in your area, call them and ask if they do free scans; most do.
If Subaru has maintained the same procedures for a while, and you have checked fluids, etc., you can try resetting the light via the ignition switch:
-Turn on the ignition (don't start) - switch it rapidly between the 'ignition on' and 'ignition off' positions three times.
If the error has cleared itself (not uncommon), the check light will reset. If the problem is still present, it will either stay or come back on.
Our Su has done this a couple of times and with the scanner we have on hand, there was never any particular repeated problem. Just a computer glitch/hiccough -

SOURCE: check engine light on in 2001 subaru outback - car

If the light was flashing when it came on, then it means your engine is misfiring.

A solid light can mean anything from a loose/faulty gas cap to a transmission issue.

This light comes on when the computer detects a fault of some sort in its diagnostic tests. If it keeps detecting this issue, the light will remain on. If the light turns off, then it has detected that the issue may no longer be present.

In order to find out what the exact reason was for your light, You need to have your car computer scanned to retrieve the code that the computer would have stored when the light triggered. Most garages will do this free of charge. The code will tell you what may have caused the light to initially turn on.

Testimonial: "thanka "

SOURCE: ABS Light and Check Engine Light on, Cruise light flashing

I had this occur on my 2007 Subaru Tribeca. ABS, Traction Control, Check Engine lights were solid, Cruise Control light was blinking and "Er SS" (commonly misread as Er 55) displayed on Trip Odometer. All lights were cleared after 10 or so miles. It appears this is a Speed Sensor (SS) reading error whereby the computer notices an irregularity with the readings taken from the four wheels. Most often it is a temporary and harmless glitch and sometimes a result of debris that is impeding the sensor's reading at one of the wheels.

SOURCE: Check engine light on. P0325, P0420 2000 Subaru

CODE PO420 CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD BANK I * CODE PO325 KNOCK SENSOR NO.1 CIRCUIT MALFUNCTION BANK NO.1 OR SINGLE SENSOR