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I've had similar codes on mine too...However "Runt" is already in the 97,000 miles. I've recently replaced all six coil packs and spark plugs as well as all four Oxy Sensors.....due to the fact the car was misfiring badly and those codes were the readout. I've also replaced the Idle control valve and gas filter, and I'm yet to replace the other valve (right next to it) that controls the gas flow (my car occasionally shuts-off on idle)...once I replaced the above parts the CEL turned off for a while and then turned back on several days later when the car was stationary (idle). I'm blaming it on the gas regulator valve that I haven't replaced...any thoughts?
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