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1995 Oldsmobile 98 Regency Elite 3.8L MIL Lamp on
Posted to GM Driveability on 10/26/2006 6 Replies

Code 623 (P1623). Replaced PCM with OEM ([...]). Replaced EPROM with [...]. Samething. No driveability problems. MIL comes on with 623 after a few min. of idle. The PROM I took out was a (1621)7619. Dealer gave me a (1621)5799 EPROM as an update? Samething. Tr...

6 Replies Received (View Replies)

  Related Documents & Media  1995 Oldsmobile 98 Regency Elite

 
Message Closed w/FIX

car Vehicle Data

1995 Oldsmobile 98 Regency Elite

VIN 1G3CX52KX4
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsNot OBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

623prom error
Message Closed w/FIX

car Vehicle Data

1995 Oldsmobile 98 Regency Elite

VIN 1G3CX52KX4
Engine3.8 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsNot OBD-II Compliant
SymptomsMIL Lamp On
OccursAlways

Trouble Codes

623prom error