P1131 1998 Mazda 626
P1131 is a code for an O2 sensor that has pegged lean. It some cases this means you have a bad O2 sensor, but sometimes it could indicate a vacuum leak, an exhaust leak, an injector that isn’t working, low fuel pressure, a connection problem, a wiring problem, or lastly, an ECU problem. In this video I cover the basics of diagnosing this code as well as how to replace an O2 sensor on this 2.0L 1998 Mazda 626. So the next time you have a P1131 code take some time to check things out before you replace the sensor.
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Tools
Encore: Link to tool:
OTC 3893 Encore OBDII Deluxe Tablet Automotive Scan Tool Kit
http://www.jbtoolsales.com/otc-3893-encore-obdii-deluxe-tablet-automotive-scan-tool-kit/#oid=1002_1
O2 Sensor Socket 1:
GearWrench 3920D 7/8 Slot – 3/8″ Drive PVS, TVS and O2 Socket
http://www.jbtoolsales.com/gearwrench-3920d-7-8-slot-3-8-drive-pvs-tvs-and-o2-socket/#oid=1002_1
O2 Sensor Socket 2:
Performance Tool W80491 Off Set O2 Sensor Wrench
http://www.jbtoolsales.com/performance-tool-w80491-off-set-o2-sensor-wrench/#oid=1002_1
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