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Home >> Chevrolet >> 1994 >> S10 Pickup 2D Pickup, 2.2 4, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.2L >> Trouble Code Charts >> Code 45, Rich Exhaust Indication >> EGR Problem
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EGR Problem

EGR valve sticking open at idle is usually accompanied by a rough idle and/or stalling. If Code 45 is intermittent, see INTERMITTENTS in TESTS W/O CODES article in this section.

CODE 45 TERMINAL & CIRCUIT WIRING IDENTIFICATION

Application PCM Terminal Wire Color
A/T & M/T
Oxygen Sensor Signal A10 Purple
Oxygen Sensor Ground A12 Tan
Fig 1: Code 45 Schematic (A/T & M/T) Rich Exhaust Indication
G91H07378
Fig 2: Code 45 Flow Chart (A/T & M/T) Rich Exhaust Indication
G91A07351
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