I have a 1995 C220 Merc Benz.
136k miles.The check engine light came on and the DTC code is PO141. On the internet PO141 indicates O2 sensor heater circuit malfunction ( Bank 1 Sensor 2)
I am not very knowledgeable in cars. So I apologize for any questions that appear basic.
- What does "O2 sensor heater circuit malfunction" mean? Does this mean that heater is broken ? Does this mean that just the sensor needs to be replaced or does it mean that other work needs to be done ?
- What is the part number so that I can price it on the internet?
- How much should a mechanic in the SF Bay Area,CA charge for replacing this sensor ?
Thanks, Tasleem