Join Now
International Automotive Technicians Network

P1189 Diagnostic Trouble Code Discussion for May 2015

Engine Oil Pressure Switch Circuit Malfunction


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1189
Help Request Posted
1999 BMW 328i 2.8L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WBAAM5333X
P1189: B2 02 at limit. ... codes & rough idle when cold. Customer changed MAF & both intake snorkels. It also had multiple 02 codes & various sensor codes from customer tinkering around. I cleared all codes, smoked it & found CCV/oil separtor leaking badly. Replaced ...
May 08, 2015
1999 BMW 328i 2.8L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: WBAAM5333X
P1189: B2 02 at limit. ... codes & rough idle when cold. Customer changed MAF & both intake snorkels. It also had multiple 02 codes & various sensor codes from customer tinkering around. I cleared all codes, smoked it & found CCV/oil separtor leaking badly. Replaced ...
May 11, 2015
2003 Chevrolet Malibu 3.1L No Start, no pulse VIN: 1G1ND52JX3
P1189: oil pressure switch circuit. At wits end.Pcm will not pulse injectors to ground.My scope skills are novice at best, mostly as a go-no go guage (is there a signal or not?).Have a 0-5v square wave from cam sensor at pcm,what appear to be good signals from both crank sensors.Am not versed in...
May 19, 2015
2003 Chevrolet Malibu 3.1L No Start, no pulse VIN: 1G1ND52JX3
P1189: oil pressure switch circuit. At wits end.Pcm will not pulse injectors to ground.My scope skills are novice at best, mostly as a go-no go guage (is there a signal or not?).Have a 0-5v square wave from cam sensor at pcm,what appear to be good signals from both crank sensors.Am not versed in...
May 20, 2015