1998 mazda b2500

Asked by May 19, 2016 at 10:44 AM

Question type: Maintenance & Repair

I am getting a p1131 code when I run a scan that says lack of ho2s11 switches sensor
indicates lean, the truck will not stay running without a lot of throttle manipulation, which
sensor should I replace?

1 Answer


Upstream sensor not being heated (HEGO) Heated Oxygen Sensor Switch - Sensor Indicates Lean - Bank 1 next, - Vacuum leak affecting bank 1 only - Fuel injector problem bank 1 - Check for cylinder misfire on bank 1 - Engine mechanical condition - Faulty O2 sensor. Over 80,000 miles change it then rescan for codes

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