Question 1

Can I drive my car from Potters Bar to MnF Motors with the engine management light on?

Accepted Answer

In most cases yes — if the car is driving normally, making no unusual noises and the light is a steady amber (not flashing red), it is generally safe to drive the short distance to our garage in Edmonton N18. If the light is flashing or accompanied by rough running, please call us on 020 8803 1231 first for guidance.

Question 2

Will an engine management light cause an MOT failure in Potters Bar?

Accepted Answer

Yes. A lit engine management light is an automatic MOT failure regardless of how the car feels to drive. If your MOT is due, get the fault diagnosed and fixed before your test. MnF Motors offers both fault diagnosis and MOT testing from our Edmonton garage.

Question 3

How much does engine management light diagnosis cost for Potters Bar drivers?

Accepted Answer

Diagnosis starts from £60 at MnF Motors. That covers proper code reading with professional equipment, pinpointing the root cause, and a clear written explanation of what needs fixing and why. Repair costs vary by fault but we will always give you a firm quote before any work begins.

Question 4

What is the most common cause of an engine management light with no other symptoms?

Accepted Answer

The most frequent culprits we see from Potters Bar drivers are faulty oxygen (lambda) sensors, a loose or degraded fuel filler cap, and failing mass airflow sensors. All of these can trigger the EML without any noticeable change in how the car drives — yet all will cause an MOT failure and, if left, can damage other components.

Question 5

Why shouldn't I just have the engine management light cleared without a proper diagnosis?

Accepted Answer

Simply clearing the code with a basic OBD reader masks the problem. The underlying fault remains, the light will return, and in the meantime you may be causing progressive damage — for example, a misfiring cylinder left unchecked can destroy a catalytic converter costing over £1,000 to replace. MnF Motors diagnoses the cause, not just the symptom.