- My model of MX-5 is: __MK 2.5
- I’m based near: __Thirsk
- I’m looking for technical help or recommendations on: __Periodic engine management warning light operation, fault code I forget but it relates to the OH cam position sensor.
I have a 2003 mk 2.5 1.8 that has done approx 99,000 miles. Ever since I’ve owned it approximately 4 years and 30,000 ago, it has an intermittent issue where the engine management warning light comes on a few minutes after starting. It tends to come on within a mile or two of starting off. The fault code relates to the cam position sensor, which has been changed to no effect. It happens roughly intermittently often with a gap of 5-6 weeks between each incidence. The light stays on for a few days then it will just go off again. The engine shows no signs of any issues when the fault light is on, no drop in performance or misfiring. Often a good run will clear the fault - but not always. I’ve had regular oil changes and am using the correct oil for the engine 5W-30. I’ve lived with this for a long time but would like to find the answer if anyone knows what may be causing this. Please let me know if you’ve encountered a similar problem.