Hello, We have an Espace V built in 2016 and the following problem: The error message “Check exhaust system” has been coming for a few days. The car was in the workshop and the Lambda probe was changed back and the glow plugs. However, the message is still coming. The workshop is finished with its Latin and has now made contact with Renault. From there it was suggested to exchange both Lambda probes, the particle filter and the motor cable harness. Price for this according to cost estimate 5900,— €. And no one can guarantee us that the error is fixed with it, maybe someone here has ideas where the error might lie? Battery voltage is fine, differential pressure hoses are tight according to the workshop. My feeling tells me that it is actually only a little something that is not found. We are secretly at a loss what we should do. Almost 6000 € for a repair is not paid out of the postage box. For help we would be very grateful.