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prob with de-cat
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Old 05 Jun 2008, 11:24 AM   #1 (permalink)
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prob with de-cat

since i have fitted de-cat pipe car runs ok for few days then runs really crap have taken to garage this fault code came up p0420 does any one no anyway to stop this or will i have to fit cat back to car
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Old 05 Jun 2008, 11:28 AM   #2 (permalink)
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what model and year of car?
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Old 05 Jun 2008, 11:37 AM   #3 (permalink)
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2001 wrx ppp fitted
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Old 23 Aug 2008, 08:15 PM   #4 (permalink)
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Re: prob with de-cat

get a 0.5 watt 2.2 ohm resistor and fit it into the o2 sensor plug.........bottom of the three plugs next to the boost solenoid valve (uk drivers side of the engine bay) fit the resistor to the ecu side of the plug- not the sensor side

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