Service Manual - Revision to Misfire DTC's
File In Section: 6E - Engine Fuel & EmissionBulletin No.: 51-65-31
Date: April, 1995
Subject: Section 6E3 - Driveability and Emissions - Revised DTCs PO3OO, PO3O1, PO3O2, PO3O3 and PO3O4
Models: 1995 Chevrolet Cavalier
1995 Pontiac Sunfire
with 2.3L Engine (VIN D - RPO LD2)
This revised information, updates the following Diagnostic Trouble Codes (DTCs):
PO3OO - Random/Multiple Misfire Detected, pages 6E3-A-98 and 6E3-A-1OO
PO3O1 - Cylinder 1 Misfire Detected, pages 6E3-A-103 and 6E3-A-105
PO3O2 - Cylinder 2 Misfire Detected, pages 6E3-A-108 and 6E3-A-110
PO3O3 - Cylinder 3 Misfire Detected, pages 6E3-A-113 and 6E3-A-115
PO3O4 - Cylinder 4 Misfire Detected, pages 6E3-A-118 and 6E3-A-120
^ These DTCs may be read on a scan tool but will not illuminate the Malfunction Indicator Lamp (MIL).
^ Step #6 for Diagnostic Trouble Code (DTC) Table PO3OO should be changed to read:
Road test the vehicle under various vehicle speeds, engine rpm's and engine loads while viewing the scan tool's current misfire counters screen for cylinders #1, #2, #3 and #4. Do any of the current misfire counters increment?
^ Step #6 for Diagnostic Trouble Code (DTC) Tables PO3O1, P0302, PO3O3 and PO3O4 should be changed to read:
Road test the vehicle under various vehicle speeds, engine rpm's and engine loads while viewing the scan tool's current misfire counter screen for the related cylinder. Do any of the current misfire counters increment?