P2237 Diagnostic Trouble Code Discussion for December 2022
Air Fuel Sensor 1 (Bank 1 Sensor 1) Pumping Current Signal Open
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| Help Request | Posted | |
| 2012 Mercedes-Benz C250 1.8L Poor Idle Quality, MIL Lamp on VIN: WDDGF4HBXC P2237: pump current connection of o2 sensor 1bank 1 elec fault or open circuit. car starts with no issue but when o2 sensor 1 comes on the car runs terrible and will stall..front o2 is new.fuel rail pressure will go from 60-70 bar to 90-100 bar..disconnecting front o2 makes the car run smooth but seems down on power but i think that i... |
December 06, 2022 |
