P0430 Diagnostic Trouble Code Discussion for October 2012
Catalyst System Low Efficiency (Bank 2)
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| Help Request | Posted | |
| 2008 GMC W3500 Forward W3S042 6.0L MIL Lamp on P0430: Catalyst System Low Efficiency Bank 2. Hello all and thank you in advance for any help. This truck has been in for these same problems once before. The customer had it at a dealer in Joliet and they declined replacement of the MAF sensor. I have checked Cat. back pressure and it was less than 2 psi... |
October 16, 2012 |
