Mike's Workshop Manuals
: Service manuals for every vehicle
Home
>>
Cadillac
>>
2006
>>
STS Base, 3.6 7, AWD
>>
Repair and Diagnosis
>>
Engine Performance
>>
System
>>
Engine Control System - 3.6L - DTC P2178 To U0423
>>
DTC P2187 or P2189
>>
DTC Descriptors
DTC Descriptors
This diagnostic procedure supports the following DTCs:
DTC P2187 Fuel Trim System Lean at Idle Bank 1
DTC P2189 Fuel Trim System Lean at Idle Bank 2