EML and the MOT
The engine management light has illuminated in my 2001 Renault Clio 1.4 16v with the K4J engine. The last three times this light came on, around six years ago, I required two new Lambda sensors and a catalytic converter, plus there was an issue with the quality of the fuel.
Given the car is due its MOT, will this light cause the vehicle to fail? Is the problem likely to have the same cause as last time? The vehicle runs fine otherwise, with no unusual noises coming from either the car or the engine. John King
Although the MOT was updated to include many warning lights in the vehicle, these all relate to areas of safety. The steering, parking brake, braking system, stability control, ABA, ESC, seatbelt restraint system and, on newer vehicles, the tyre pressure monitoring system warning light are included in the test. Having been through the manual to double-check, there is no reason the vehicle should not pass the test simply because the EML is on. However, it might be the case that the light is on because of a failure that will affect the emissions, in which case the vehicle will fail the emissions test.
Because of the wide range of faults that can trigger a code and illuminate the EML, it is difficult to pinpoint the cause and I would recommend getting the codes read to correctly diagnose this.
The Clio engine management light (EML).