What does check engine code P1502 mean for a 1997 subaru legacy?

SOURCE: 1997 Subaru Legacy GT 2.5L

Check the knock sensor.

The light comes on when you climb a hill, accelerate quickly or do anything that advances the timing a lot and the knock sensor doesn't hear the knocks (pinging). The engine timing is not retarded, so you get a misfire.

The computer turns off the CEL if it sees the car start and run with no misfire of this nature 4 times in a row.

Kevin Blair

• 196 Answers
• Posted on Dec 18, 2008

SOURCE: how to retreive a check engine light from a 1991 subaru

read the info in the link it has a step by step http://legacycentral.org/library/literature/codes.htm

SOURCE: Cause of noise in front differential of 1997 Subaru Legacy Outback.

there is a plug on the shaft-side of the differential. Using a ratchet remove the plug and with the engine OFF, stick your finger inside the hole and you should get fluid just below the threads of where the plug goes in.

SOURCE: 1997 subaru legacy 2.5 emission code P0170 fuel

If I am correct the po170 code is a lean condition. Usually this is caused by a cracked air duct leading to the air filter. Or the air filter box is not secured properly. I work in the service department at subaru and when we do big services we dont get the air box on right and customers return with a check engine light with the same code and we always find that the air box is not secured. This does not mean this is the issue, for a fuel trim code could be other issues, but I would definately look at this first before getting into a/f sensors, converters and all those other expensove items.

SOURCE: 1997 Subaru legacy cooling fan

well if the fan is stiff to turn by hand I would replace the fan the motor seems like is seized up, just in case ceck the fuses and relays, check the motors voltage and test the circuts voltage, make sure the ect sensor is working fine to be on the safe side. the easy way to make sure a relay is working is trade it with another for the same fuse box. if your fan cuts on you know you have a bad relay.