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Discussion Starter #1
2009 RT Challenger with Kooks Headers, High flow cats throwing Codes P013A, P013C intermittently. Any idea why it's throwing these codes? Also has CEL Eliminators on both 02's after cats.
 

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MOPAR Top Eliminator, Carlisle 2016
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"When an OBD-II equipped vehicle has a stored P013A code, it means that the powertrain control module (PCM) has detected a slow response time from the downstream (or post catalytic converter) oxygen (O2) sensor or circuit for engine bank one. Bank 1 specifies the bank of the engine which contains the number one cylinder."

The "C" on the second code means Rich to Lean (Bank 2 Sensor 2).
 

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P013A = Oxygen Sensor Slow Response Rich to Lean Bank 1 Sensor 2
P013C = Oxygen Sensor Slow Response Rich to Lean Bank 2 Sensor 2

What is causing these codes?
 
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