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P0134 Diagnostic Trouble Code Discussion for August 2007

Heated Oxygen Sensor (Bank 1 Sensor 1) Signal Remains At Center

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Trouble Ticket Help Requests for DTC P0134
Help Request Posted
2002 Pontiac Firebird Formula 5.7L Poor Idle Quality, Hesitation, Surge, Stall, MIL Lamp on VIN: 2G2FV22GX2
P0134: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Activity. The owner states warm to hot conditions, engine has hessitated, almost stalled. ses came on, accelerating from a stop. There have been 3 times in the last month. There were no prior running problems befor the high performance parts were installed. They say the...
August 06, 2007
1999 Volkswagen Jetta GLS 2.0L Poor Idle Quality VIN: 3VWSA29M3X
P0134: 02 sensor ckt inactive bank 1 sensor 1. vechicle came to shop for failed smog due to check engine light. found vacuum leaks at line to fuel pressure regulator - replaced, dipstick tube - replaced, and brake booster - replaced. Cleared codes and now vehicle is barely driveable ??
August 09, 2007
1997 Buick Skylark Limited 2.4L MIL Lamp on, FIXED O2 VOLTAGE VIN: 1G4NJ52T4V
P0134: Oxygen Sensor (Bank 1 Sensor 1) Insufficient Activity. Vehicle came to us with code p0134a, did replace o2 sensor under warranty. Still did same this, code fixed at .450 volts. I unplugged o2 and ran to ground still stayed fixed. Customer complained about fans staying on, This is when I suspected pcm problem. Scan...
August 27, 2007