Quote:
Originally Posted by dparm
The heater circuit is an extra wire on the connector that warms the sensor up on cold starts. Do you have access to the BMW service manual/ISTA? It would have a diagnostic process for that code.
If not, take the car to the dealer and let them handle it.
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Would you be able to explain this problem further? I'm having the following problems.
2741 Lambda probe heating controller diagnosis before Kat Bank 2
274F Lambda probe error Nernstleitung before Kat Bank 2
Codes P3027 and P2247. Looks like it is the Bank 2 Sensor 1. Going to replace this. Should I do both Pre Cat Sensors or just he one throwing the code?