Code : U300C
Marque : All makes
Description : U300C Ignition Input Off/On/Start
Causes possibles :
* Ignition Input Off/On/Start (ISP-R) harness is open or shorted
* Ignition Input Off/On/Start (ISP-R) circuit poor electrical connection
Buy your car diagnostic device :
Download the free CarDiag App :
In most cases, the check engine light comes on even without a fault or because of a minor fault.
The electronics can be fickle and can detect "failures" without incidence :
- Poor fuel quality,
- Fuel tank cap improperly closed,
- Low oil level,
- A faulty sensor,
Sometimes, a simple reset via CarDiag can solve a lot of "electronic problems".