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P1133 Diagnostic Trouble Code Discussion for May 2009

Heated Oxygen Sensor (Bank 1 Sensor 1) Insufficient Switching

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Trouble Ticket Help Requests for DTC P1133
Help Request Posted
1999 Volvo V70 X/C AWD 2.4L Poor Idle Quality, MIL Lamp on VIN: YV1LZ56D0X
P1133: Front heated oxygen sensor intermittent signal. ... varying trouble codes recurring at random for a year. It has had codes P0134, P0137, P1332 (VVT), P0422 (cat efficiency) Currently has recurring P1133 & P1171 codes that reset despite MAF sensor replacement. In the past I have found bad battery ground ...
May 08, 2009