Engine light on get it check and the code is p0420,p1334 the car is a 95 and 2001

SOURCE: check engine light on;engine codes p0420 and p0773

I looked up the codes you posted.
P0420 is showing a bad oxygen sensor on bank #1, the one down by the catalytic converter.
P0773 is an electrical problem with the shift solenoid E.
A bad oxygen sensor would cause lower fuel milage.

SOURCE: need info on codes PCM.P0134 and P0420

Both codes are for the oxygen sensors.
P0134 oxygen sensor on bank #1, sensor #1 is bad.
P0420 oxygen sensor on bank #1, the sensor down by the catalytic converter, is also bad.

SOURCE: P0420 and check engine light

A p0420 code is set when the computer determines that the catalytic converter isn't doing it's job. In almost all instances that code can't set as a result of a bad o2 sensor so they probably didn't have to be replaced. The catalytic converter will need to be replaced, prefferably by an oem part. This can be pretty expensive and should be considered before purchasing the vehicle.

I have replaced a few bad converters on late model subarus in the past few years.

ROBERT GARCIA

• 926 Answers
• Posted on Apr 21, 2009

SOURCE: Check Engine Light came on with code p0420. Dealer wants $3900 to fix "b2 manifold and front pipes. Does this make sense. Are their better alternatives. I left the dealership without fixing it and the

if your car no present any problem i think that mechanic is a thieft.

Sometimes the fuel have mixtures that make the check light on , to reset disconnect the negative battery few minutes, no go more to this mechanic,good luck

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