The 2C7E BMW code indicates a problem with the oxygen sensor behind the catalytic converter. Resolving this issue can restore your BMW's performance. 2c7e Lambda probe Error All times are GMT.
Hi, I have A BMW 1-Serie (E87) 120i 2.0i Engine code N43-B20A Year 2007 Petrol, Auto Transmission. The car came with the following fault codes. 2AF4 Digital Motor Electronics (DME): NOx sensor, electric Absent.
BMW Oxygen Sensor – Downstream Denso 234-4971
2AF2 Digital Motor Electronics (DME): NOx sensor, lambda linear Absent. 2AF6 Digital Motor Electronics (DME): NOx sensor, lambda binary Absent. 2C7E Oxygen Sensor Emissions Control.
The codes were involving both post-cat o2 sensors and pre-cat o2 sensors with lamba/mixture errors. I replaced both back o2 sensors and the front o2 sensor that was giving codes, they still appeared. Inspect sensor connectors for corrosion or damage.
BMW Oxygen Sensor Bosch 15738
Replacing faulty sensors restores proper air-fuel mixture readings, improving engine efficiency and emissions. 2c7e is lambda probe behind catalytic converter, trimming control. I changed my o2 sensor twice bought them from FCP EURO.
I have no aftermarket pipes and the original cats. I checked the wiring on the connector yesterday and it looks normal. I can't figure out whats Triggering this code.
What Is a BMW DME? Failure Symptoms, Reset & More! (2025)
hi all member please share expirence with fault code 2C7E (DME oxygen sensor emissions control)BMW X6 N55 2012 thank. 2C7E - P114A Information saved in DME Fault code 2C7E - P114A Fault text Oxygen sensor behind catalytic converter, trim control Fault description Post Catalyst Fuel Trim Via Oxygen Sensor System Too Rich (Bank 1) Condition for fault identification Test condition: O2 sensor trim control No fault memories Drive at 50 - 80 km/h and at moderate engine speed. Terminal condition: Terminal 15, engine.
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