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Home >> Chevrolet >> 1990 >> Caprice Brougham, 5.0 E >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4.3L TBI >> Pcm/BCM Code Charts >> Code 43, ESC Error >> Test Number 5)

Test Number 5)

If sensor line is routed too close to secondary ignition wires, ESC module may see induced interference as a knock signal.

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