P0430 code, need some info from you guys
Thread Starter
JK Enthusiast
Joined: Mar 2009
Posts: 213
Likes: 0
From: Northwestern Ontario
P0430 code, need some info from you guys
Its a code for "Catalyst efficiency below threshold" according to my code reader. I've searched around and saw a few posts that this is probably to do with the catalytic converter.
I'm taking my 07 Rubicon in to the dealership as its still under the extended warranty (gold package), I've read that this is covered under warranty in the U.S., but can anyone here tell me if this is true here in Canada.
Its the only Chrysler dealership in town, so they have me by the balls, and these guys are always pricks to deal with.
Any info you guys (and gals) can arm me with before goin in on Monday will be much appreciated.
I'm taking my 07 Rubicon in to the dealership as its still under the extended warranty (gold package), I've read that this is covered under warranty in the U.S., but can anyone here tell me if this is true here in Canada.
Its the only Chrysler dealership in town, so they have me by the balls, and these guys are always pricks to deal with.
Any info you guys (and gals) can arm me with before goin in on Monday will be much appreciated.
JK Jedi Master
Joined: Feb 2008
Posts: 12,907
Likes: 185
From: Maine
Can't help you with what's covered in Canada.
But, here is what's going on with your JK:
(Bank 2 is the left side, driver's side.)
P0430-CATALYST EFFICIENCY (BANK 2)
Theory of Operation
The State of Change (SOC) catalyst monitor uses the signals from both the upstream and downstream O2 sensors to detect aging of the catalyst. Based on the fact that when a catalyst ages, it loses some of its Oxygen Storage Capacity (OSC). As a result, part of the untreated exhaust gases can breakthrough the catalyst and causes the downstream O2 sensor to deviate from its neutral (Stoichiometric) position. By observing the activities in the downstream O2 signal, the degradation level of catalyst can be detected. In general, the higher the downstream O2 sensor SOC value, the more exhaust gas breakthrough and the lower the OSC of the catalytic converter.
Possible Causes
(K902) O2 RETURN UPSTREAM CIRCUIT SHORTED TO GROUND
(K904) O2 RETURN DOWNSTREAM CIRCUIT SHORTED TO GROUND
(K902) O2 RETURN UPSTREAM CIRCUIT OPEN
(K904) O2 RETURN DOWNSTREAM CIRCUIT OPEN
EXHAUST LEAK
ENGINE MECHANICAL CONDITION
AGING O2 SENSOR
CATALYTIC CONVERTER
But, here is what's going on with your JK:
(Bank 2 is the left side, driver's side.)
P0430-CATALYST EFFICIENCY (BANK 2)
Theory of Operation
The State of Change (SOC) catalyst monitor uses the signals from both the upstream and downstream O2 sensors to detect aging of the catalyst. Based on the fact that when a catalyst ages, it loses some of its Oxygen Storage Capacity (OSC). As a result, part of the untreated exhaust gases can breakthrough the catalyst and causes the downstream O2 sensor to deviate from its neutral (Stoichiometric) position. By observing the activities in the downstream O2 signal, the degradation level of catalyst can be detected. In general, the higher the downstream O2 sensor SOC value, the more exhaust gas breakthrough and the lower the OSC of the catalytic converter.
- When Monitored: ECT above 70° C (158° F), engine RPM between 1400 and 2300, vehicle speed between 64 and 96 kph (40 and 60 mph), and engine run time greater than 3 minutes.
- Set Condition: If the final State of Change index is within the calibrated fail threshold. Two trip fault. Three good trips to turn off the MIL.
Possible Causes
(K902) O2 RETURN UPSTREAM CIRCUIT SHORTED TO GROUND
(K904) O2 RETURN DOWNSTREAM CIRCUIT SHORTED TO GROUND
(K902) O2 RETURN UPSTREAM CIRCUIT OPEN
(K904) O2 RETURN DOWNSTREAM CIRCUIT OPEN
EXHAUST LEAK
ENGINE MECHANICAL CONDITION
AGING O2 SENSOR
CATALYTIC CONVERTER
