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Exhaust Gas Recirculation Sensor A Circuit Low. There are different designs of EGR Exhaust Gas Recirculation systems but they all operate in a similar way. Code P0405 indicates a problem with the exhaust gas recirculation system. Check the exhaust gas recirculation valve and circuits. Some vehicles require several driving cycles before the fault code is triggered while on some vehicles the check engine light lights up when the first sign of a change in the exhaust gas recirculation flow rate is received.
OBD II fault code P0489 is a generic code that is defined as Exhaust gas recirculation EGR system -circuit low or sometimes as Exhaust Gas Recirculation A Control Circuit Low depending on the source consulted. OBD-II Code P0405 is defined as a Exhaust Gas Recirculation Sensor A Circuit Low. P0405 is a diagnostic trouble code DTC for Exhaust Gas Recirculation Sensor Circuit A Low. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Although generic the specific repair steps may vary depending on makemodel. Error Code P0489 is defined as Exhaust Gas Recirculation A Control Circuit Low.
The EGR valve is a PCM Powertrain Control Module controlled valve that allows measured amounts of exhaust gasses to.
It is triggered when the PCM fails to detect some change in manifold air pressure when the EGR valve is activated. NOx gases which are a leading cause of acid rain and in some people respiratory problems are formed when the engine combustion temperatures become too high 2500 F. What does that mean. It is triggered when the PCM fails to detect some change in manifold air pressure when the EGR valve is activated. Code P0316 is a generic code specified by the Society of Automotive Engineers SAE. This diagnostic trouble code DTC is a generic powertrain code which means that it applies to OBD-II equipped vehicles.