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Trouble code P0420 means:Catalyst system efficiency below threshold
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∙ 13y ago
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How can you diagnose the cause of right rear wheel wobble in a 1998 Subaru impreza rs?
Swap rear tires from right to left, see if the wobble changes sides. If the wobble changed sides you have a bent rim or a bad tire. If the wobble didn't change sides you have a bent axle or hub.
On a 1995 subaru impreza 1.8L could an inoperable EGR valve be the cause for an intermittent check engine light?
Yes, along with dozens of other things.
Can holes in the exhaust manifold cause a P0420 code to be thrown?
Yes.
What would cause a 1993 Subaru Impreza not get fire to the plugs and the relays to click Fuel pump and cooling fan also keep kicking off and on also?
Cam sensor and/or crank sensor.
What would cause a new brake light switch to die a week later after every time it's replaced on a 96 Subaru Impreza?
I think that switches with bad grounds can burn up like that.
What would cause a 97 subaru impreza 2.2l to have difficulty starting - the engine will crank and crank- this does not happen every time the engine starts and happens only randomly?
Could be a main engine relay problem.
When I put my 1999 subaru impreza into drive it hesitates but will shift into reverse with no problem the fluid level is good could the filter need changing?
A plugged transmission filter can cause your transmission to hesitate when you shift into drive. A collapsed vacuum hose can also cause the problem.
Which is the cheapest Subaru?
Subaru sucks. why the hell would you want a Subaru, especially the cheapest Subaru cause they all blow.
How do you spell diagnose correctly?
Diagnose is the correct spelling (to determine the cause).
What could cause a 1995 Subaru Impreza to knock when it is first started for a second and then seem fine it almost sounds like its coming from up in the head area and not a rod knock?
Fine it almost sounds like its coming from up in the head area and not a rod knock? OMG
Code 45 in Subaru?
The Code 45 you get in Subaru is as a result of the sensor which will cause the fuel cut.
How do you diagnose check engine light for a 1993 Chevy s10?
You have it checked for codes and diagnose the cause of the code.
