SOURCE: 2005 toyota tacoma check engine light
pull the E.F.I. fuse located under the hood on the drivers side, if there is more than 1 efi fuse pull them both along with the E.T.C.S. fuse (if there is one) for 1 minute or so. That should do it
SOURCE: How do i reset the maintenance required light
1. Turn the ignition key to the “OFF” position
with the odometer reading shown.
(For details, see “Odometer and two
trip meters” on page 145 in this Section.)
2. Turn the ignition key to the “ON” position
while holding down the trip meter
reset knob.
Hold down the knob for at least 5
seconds. The odometer indicates “000000”
and the light goes off.
If the system fails to reset, the light will
continue flashing.
To reset the Maintenance Lamp turn the car key to ON (not start), set your odometer on mileage (not trip a or b), then depress and hold the button that switches from odo and trip then turn key off. Turn the key back to ON, while you are holding the button down you will notice the maintenance light blink and go out. Reset is complete and you are done.
These are available in your owners manual for the vehicle.
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SOURCE: how to change the check engine light on a 2000 toyota tacoma
i had the same thing, i had it tested at auto zone and they said it was the obd2. i was told the o2 sensor was not a big deal so i reset the check engine light by holding down the trip meter button while starting her up and it has not been on since.
SOURCE: 2003 parking bulb toyota tacoma
OK, I just fixed mine. The unit pulls out. You have to get a screwdiriver, wrap it with a cloth so it doesn't scratch the paint, then gently wedge the entire unit out. When it pops out, you'll see the clips that keep it in place. You might think its breaking when you pull it out, but trust me this is how you do. Just be gentle with it. After you get the unit out, simply take the socket out and replace the bulb. I did it in five minutes.
SOURCE: 2005 toyota tacoma 2.7 code p0037 replace rear 02
P0037 - O2 Oxygen Sensor Circuit High Voltage (Bank1, Sensor2)
The Heated Oxygen Sensor (2) located rear of catalytic converter produces an output signal relative to oxygen storage capacity of catalytic converter. Ho2S 2 signal is less active than signal produced by front oxygen sensor. This code sets when HO2 Sensor voltage is greater than 999 mV for more than 2 minutes (time depends on model. Could be as high as 4 minutes)
Symptoms: There may be no noticeable symptoms except for MIL illumination. Possible high fuel pressure can over rich the system.
Causes: A code P0138 may mean that one or more of the following has happened:
* Faulty O2 sensor
* Short to battery voltage in O2 sensor signal circuit
* High fuel pressure (not as likely)
Here are some potential solutions:
* Replace O2 sensor
* Repair short to battery voltage in o2 sensor signal circuit
If you replaced the O2 sensor, then its possible that you have some electrical problem there; reset the codes first, and if this come on again, check in this link TSB P0037 electrical diagnostic procedure.
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