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Home >> Buick >> 1993 >> Riviera >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.8L >> ECM/Pcm Code Charts >> Code 26 - Quad-Driver "A" Error (3.8L "W" Body)(4 Of 4)

Code 26 - Quad-Driver "A" Error (3.8L "W" Body)(4 Of 4)

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. 4)  This test will determine if the problem is the circuit or the component. As the factory installed PCM is protected by an internal circuit breaker, it is unlikely that the PCM needs to be replaced.
Fig 1: Code 26 Flow Chart (3.8L "W" Body) (4 of 4) Quad-Driver "A" Error
G91B07304