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P0134 Diagnostic Trouble Code Discussion for November 2008

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
1997 Chevrolet Monte Carlo LS 3.1L MIL Lamp on, EGR low flow VIN: 2G1WW12M4V
P0134: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Activity. ... on and has no other complaints. Checked codes and found P0410 EGR flow low and P0134 Bank 1 sensor 1 sensor slow switching. Checked flow chart and found that MAP sensor is used to detect EGR flow on decel above 30 mph. Checked EGR ports and were very clean...
November 08, 2008
2006 Chevrolet Tahoe Z71 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GNEC13Z26
P0134: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Activity. Concern is intermitant. When it occurs, engine develops a bad miss and misfires are indicated on Cyls. 1,3,5,7 in decreasing numerical order respectively. (5465,545,394,296) Injector pulse width at normal idle B1=3.57 mS, B2=3.49 mS. IPW when misfiring B1=5.63...
November 18, 2008