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P0134 Diagnostic Trouble Code Discussion for January 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
1995 Chevrolet Blazer 4.3L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire VIN: 1GNCT18WXS
P0134: o2 insuff action b1s1. had new goodwrench motor about 40,000 miles ago. customer brought in with ses lite on, and bad misfire. we checked cap ,rotor and wires,(which customer had reused with new engine) and replaced them and the plugs , #2 plug was severly fuel fouled. the data stre...
January 25, 2007
1996 Chevrolet Cavalier Z24 2.4L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1G1JF12T4T
P0134: Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Activity. ... a 96 Cavalier with a P0134 Code (No activity on B1S1 O2 Sensor).O2 sensor is always reading .4 volts & never going into closed loop. I checked the O2 sensor under the hood with a voltmeter-reading .9 volts. I created a large vacuum leak & the O2 se...
January 25, 2007