Remove Check Engine Light Remove Events Remove Troubleshooting
article thumbnail

Throttle-By-Wire Diagnostics

Tomorrow's Technician

During events like increased loads on the alternator caused by electric power steering, the throttle angle will keep the engine speed constant. The other advantage to throttle-by-wire is the ability to manage power from the engine during ABS, ESC and traction corrections. Codes P0120-P0124 are for sensor A.

article thumbnail

P0442: EVAP System Leak Detected (Small Leak)

RepairSmith

An Illuminated Check Engine Light It’s almost impossible to physically detect an EVAP leak. So when the leak detection pump in the exhaust system suspects a small EVAP leak event, it immediately turns the Check Engine Light on.