EST or ESC code 43
Thread Starter
Intermediate
Joined: Nov 2012
Posts: 41
Likes: 1
From: Ocala Florida
EST or ESC code 43
Hey Guys,
My 1991 6 speed L98 started showing the "Service Engine Soon" warning light last week. The warning comes on intermittently while driving. It may stay on for 3 or 4 minutes go off for a moment or two then return. The code scanner tells me it is code "43". From what I can gather EST circuit-low voltage detected, and or, ESC-circuit problems. Ok great what do I do now ? Any help would be appreciated.
My 1991 6 speed L98 started showing the "Service Engine Soon" warning light last week. The warning comes on intermittently while driving. It may stay on for 3 or 4 minutes go off for a moment or two then return. The code scanner tells me it is code "43". From what I can gather EST circuit-low voltage detected, and or, ESC-circuit problems. Ok great what do I do now ? Any help would be appreciated.
Safety Car
Joined: Jan 2004
Posts: 3,556
Likes: 13
Work through the fault diagnostics for that code
http://www.chevythunder.com/esc_map_code_43.htm
found in the FSM every C4 owner should own ( unless they want to pay the stealership to fix basic faults )
http://www.chevythunder.com/esc_map_code_43.htm
found in the FSM every C4 owner should own ( unless they want to pay the stealership to fix basic faults )
