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Need everyones thought on this one. My04 S. Over time my idle rpm starts to drop and pulse when stopped. eventually it will throw a PSM and using Durametric I have P2186 Throttle body sensor. I cleaned the throttle body, cleared the codes and she purrs like a kitten. Slowly day after day she will start to drop rpm coming to stop and start the whole cycle again. it takes 3 to 4 weeks. I have checked throttle body, coils, plugs, fuel rail. I don't know what else to check?
Hello All, my PSM is back on my '04 S. I cleared the codes, disconnected the negative battery cable and PSM comes back after about a day or so. No CEL on only PSM. Error codes P2186 Throttle/Pedal Pos. Sensor/Switch D/E voltage correlation-implausible signal, test conditions are not complete fault is currently active and is not causing a DTC light. P2174 Throttle/Pedal Pos. Sensor/Switch E circuit-implausible signal, test conditions are not complete fault is currently active and is not causing a DTC light. 470 CAN 1314 DME Some background...the first time this error code came up i checked the enging throttle body, cleaned it and made sure all connections were secure. Additionally i replaced both batteries last summer. Now what should I check/replace?