Hi all, I have a 2010 Linea 1.4 FIRE. I have some long distance trips coming up, so I had been to FASS to get a general check-up done. Though I had no such warning showing up before the check-up, they found ' Check Engine' showing up and the examiner giving the lambda sensor error. The technician told me it was related to the post catalytic converter sensor and there was nothing to worry about. The warning light, that stays up the entire time the engine is on, can be ignored and it will have no impact. He also quoted the sensor to be around 6k. I did some googling and found that the sensor is vital for closed loop operation of the engine and wrong sensor values can cause huge damage to the engine. Can somebody help me if you know how important/risky this situation is? Should I get the sensor changed at any cost? Thank you all in advance Nilesh P.S I am a newbie and all I say above is from a day's googling. So please correct me if I said something inaccurate.