How to Fix Caterpillar C9 Code 36 PID 84-2: Vehicle Speed Signal Invalid
A Caterpillar C9 engine with Code 36 PID 84-2 indicates that the Engine Control Module (ECM) has detected an invalid vehicle speed signal. This fault […]
Caterpillar C9
Caterpillar C9 Code 64-2: Secondary Engine Speed Loss of Signal — Causes & Fix
Caterpillar C9 code 64-2 means the Engine Control Module (ECM) temporarily lost the secondary engine speed/timing signal. Common causes include a faulty or improperly installed […]