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P0406

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P0406 OBD-II Trouble Code: Exhaust Gas Recirculation Sensor "A" Circuit High
P0406 code definition P0406 is a general ODB2 trouble code indicating a fault within the exhaust gas recirculation EGR circuit. This code...

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2005 Chrysler 300c has a code P0406. I believe EGR needs replacing, Don't know if it will make it 25 miles to dealer.

P0406 (https://www.yourmechanic.com/article/p0406-obd-ii-trouble-code-exhaust-gas-recirculation-sensor-a-circuit-high-by-spencer-clayton) involves the EGR system but that may or may not be the only factor causing your rough running condition. Typically, P0406 will set if you have a failed EGR valve, excessive carbon buildup, an open or short in...

What is the code P0406 and P0128?

The code P0406 (https://www.yourmechanic.com/article/p0406-obd-ii-trouble-code-exhaust-gas-recirculation-sensor-a-circuit-high-by-spencer-clayton) is for the electronic gas recirculation valve high circuit input. Meaning the valves sensor is detecting a high voltage input. This can be due to carbon build up on the valve, a bad valve, or a...

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