Re: 99 WJ Error Code...
 

Was yours the typical breaking apart, rattling and clogging the
muffler but, may have still been doing it's job?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Eric wrote:
>
> Sorry to hijack the thread -- My cat was shot, but the sensor never said
> anything. Would that mean the sensor is bad?
>
> Eric
> 99 TJ SE

Re: 99 WJ Error Code...
 

Was yours the typical breaking apart, rattling and clogging the
muffler but, may have still been doing it's job?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Eric wrote:
>
> Sorry to hijack the thread -- My cat was shot, but the sensor never said
> anything. Would that mean the sensor is bad?
>
> Eric
> 99 TJ SE

Re: 99 WJ Error Code...
 

Was yours the typical breaking apart, rattling and clogging the
muffler but, may have still been doing it's job?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Eric wrote:
>
> Sorry to hijack the thread -- My cat was shot, but the sensor never said
> anything. Would that mean the sensor is bad?
>
> Eric
> 99 TJ SE

Re: 99 WJ Error Code...
 

Was yours the typical breaking apart, rattling and clogging the
muffler but, may have still been doing it's job?
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Eric wrote:
>
> Sorry to hijack the thread -- My cat was shot, but the sensor never said
> anything. Would that mean the sensor is bad?
>
> Eric
> 99 TJ SE

99 WJ Error Code...
 

99 WJ Limited 4.7L 77,000 mi

Right...so I am not mechanically inclined beyond simple fluid changes. Can
someone give me a hint on what this might mean? Just spent a bunch of $
replacing CPS and about 2 weeks later we get this code:

P0420 (M)
Catalyst System Efficiency Below Threshold (Bank 1)

Catalyst 1/1 efficiency below required level.



Chad

02 TJ His

99 WJ Hers