z3 boston green

  1. Mike Klein

    Scanned error codes - 1999 Z3 2.8

    Hi al! My Z is due for inspection and the dreaded check engine light is on. Ran the scanner and it comes up with 5 codes. First two are codes 25 and 55, Lambda Sensor Heater -Bank 1 - O2 sensor and Lambda Sensor Heater -Bank 2 – O2 Sensor. I recently replaced both pre-cat O2 sensors and while it...