Question about 2004 Toyota Tundra
You just need to drive under varied conditions for a few more days and it should complete OBD2 drive cycle internal shelf test.
Posted on Mar 24, 2014
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Posted on Jan 02, 2017
On toyotas this is almost always a failed o2 period. Take it somewhere and have it put in. On v6's it is not that easy to get to.
Posted on Jul 10, 2009
It is not hard to change the sensor, it just screws into a threaded hole. The light will not go out immeditaly, after the sensor is replaced. It needs to go thru a drive cycle. Your best bet is to replace the sensor and get the code cleard by whoever scanned it for the 0031 code.
Posted on Jul 23, 2009
SOURCE: 05 COROLLA P0031
What does that mean?
A P0031 DTC (diagnostic trouble code) refers to the O2 sensor (oxygen sensor)
located on Bank 1 in front
of the catalytic converter. There is also an oxygen sensor behind the converter
which is Sensor #2.
This O2 sensor #1 may also be refered to as an air/fuel ratio sensor since on some vehicles it is. It detects the amount of oxygen in the exhaust gas compared to the outside air and then vehicle's computer adjusts the air/fuel ratio going into the engine. The sensor is less effective when the exhaust gas temperature is low, so it includes a heater which is activated to help get better readings from the A/F O2 sensor. Essentially this P0031 code means that the resistance of the heater circuit is lower than normal. In most cases, that resistance level must fall below 0.8 A to trigger the DTC code.
Note, this code is very similar in nature to P0032, P0051, and P0052
Potential Symptoms Most likely you'll not notice any symptoms other than the MIL (malfunction indicator lamp, a.k.a. the check engine light) will illuminate.
Causes A P0031 DTC trouble code may be caused by one or more of the following:
To fix a P0031 DTC code, you'll need to do a proper diagnosis. To do that, you'll want to inspect the wiring and connectors leading to the sensor. Also if equipped with a heater relay and fuse, you'll want to check those as well. Use a digital volt ohm meter to:
With that said, a common fix for this DTC is to replace the air/fuel (O2 oxygen) sensor #1 on bank 1.
Please keep in mind that OEM (original equipment) replacement sensors are recommended (from the dealer). Aftermarket sensors can be less reliable and of poorer quality (not always, but more often). There's also a chance that replacement parts for the P0031 code may also fall under a federal emissions warranty (check with your dealer to see if it's covered).
Posted on Aug 20, 2009
Trouble code P0031 means: Oxygen Sensor Heater Control Circuit Low - Bank 1 Sensor 1 .
Error code p0051:replace O2 sensor ($75-150 depending if OEM) before catalytic converter. need O2 socket ($10) to get at and tough to get to if vehicle isn't at least on a ramp.
Posted on Nov 22, 2009
Tips for a great answer:
Mar 28, 2017 | Cars & Trucks
Dec 22, 2014 | 2003 Mazda Protege
May 05, 2014 | Cars & Trucks
check for 12 volts at the heater circuit feed (hint: unplug the sensor and check at the wiring connector to do this measurement).
check the ground circuit for continuity.
measure the resistance of the heater circuit (done on the sensor itself).
measure the resistance and voltage of the wiring.
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