TP Sensor DTC P0123 (Signal Voltage High) Chart Revised

Group Ref.: Engine Fuel & Emission

Bulletin No.: 416512

Date: May, 1994

SERVICE MANUAL UPDATE

SUBJECT:
SECTION 6E3 - REVISED DTC P0123 CHART

MODELS:
1994 BUICK REGAL, LE SABRE, PARK AVENUE
1994 CHEVROLET LUMINA APV
1994 OLDSMOBILE EIGHTY EIGHT, NINETY EIGHT, SILHOUETTE
1994 PONTIAC BONNEVILLE, TRANS SPORT WITH 3800 ENGINE (VINS 1, L - RPOs L67, L27)





This bulletin updates the DTC P0123 (TP) Sensor Circuit (Signal Voltage High) chart. The revised chart addresses the possibility of a faulty EGR valve inducing battery voltage into the PCM on the EGR 5V reference (CKT 474).