70 PARKBRK SWITCH Park Brake Sw Parking Brake Switch
71 Status Idle Timer IDLESHUTDWNTMR by IdleShutdwnTmr
I'd check that parking break switch... Not sure how you get at it. I assume it's on the yellow knob.
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What can cause a 2013 Cascadia go into a slow mode? The engine light is on, and there are two error codes (70 and 71). It starts, but only idles.