If you are preparing for the test, follow these strategies to ensure a passing grade:
Watch a certified Upper Bay Technician for a full shift. See how they apply the JLU principles in real-time. If you are preparing for the test, follow
“Why would a stuck-open thermostat cause a P0128 code?” → I’ll explain that the engine doesn’t reach closed-loop temperature quickly enough, and how to confirm with a scan tool. If you are preparing for the test, follow