How do you reset the check engine light on 1996 Toyota truck?

Answer THE CHEAPEST, quickest thing to try is to disconnect one battery terminal (neg.) for about 20 minutes. Then reconnect. This will sometimes reset the light and the computer. Doesn't always work, but can't hurt to try. <<ADR>> The " check engine light" is by far one of the most misunderstood technological advances It is a warning light that is illuminated when there is a problem affecting the EMISSIONS of the vehicle.. Don't let it bother you as it is a good thing once you understand it. One point that was brought up a recent meeting of technicians was that the amount of hydrocarbons is greater when the gas cap is left off than when the engine is running. Hydrocarbons are part of pollution emitted as gasoline evaporates. Going a step farther, one facet of the emission system is the "Evaporative" portion. This is when the fumes from the gasoline are leaking from the system into the outside air. This is one part of the emission system that can trigger a check engine light. I would say a small percentage of the vehicles that have a check engine light are the result of a loose or inadequate gas cap. But understand that many scenarios are possible with the "check engine light" The vehicle's powertrain computer (note that some vehicles have multiple computers aside from the powertain computer) will run a series of self-tests. They will only run under certain criteria. And they are different from manufacturer to manufacturer. Some self-tests or “monitors” are not run until preceding ones have run successfully. So if there is a problem in one particular area that is preventing another self test from running, you can have a situation where one problem is fixed, but another still exists. If you fix a problem and drive the car through a drive cycle that sets the monitor (or self test) the light will go off as it passes that criteria that triggered it in the first place. There are many different sources for the light to come on. Anything that caused combustion to fail, commonly called a misfire will set the light. Various sensors such as oxygen sensors that evaluate the exhaust before and after the gases are burned in the converter. Transmission codes may set the check engine light to appear. If the car is running okay, get it fixed in a reasonable amount of time such as within the month. It will probably save you fuel if you do. However if the Check engine light is flashing, you should be driving it as damage is being done to the converter. Some emission components are covered beyond the standard warranty. The converter for example is covered up to 80,000 miles by the manufacturer. After 1996, the auto industry went to a idea called OBD II (on board diagnostics). This was to get all the manufacturers onto a similar plane for troubleshooting and powertrain control. While they still differ, many corrections and adaptations were made for technicians to better fix the check engine light problems. Prior to this there were so many different and poor troubleshooting data from a check engine light problem that resolving the problem was much more difficult. Many early warning light of this nature were set to illuminate based on mileage. An Oxygen sensor was one of the things that were meant to be replaced when that mileage was hit. This is much like many current "Change oil lights” that are set based on a pre-set mileage. To start testing for the check engine light, you’ll need to find the codes from the computer, match the code to the troubleshooting procedure, follow the procedure to find the source. Repair the source, light will go out if that was the only problem. There are "monitors" or self tests the computer runs the car through a drive cycle, if a problem occurs, it may not run all of the self tests until that problem is taken care. There are self-tests for the oxygen sensor circuit, egr system, evaporative system to name a few. Therefore, another problem may exist. It is emission related. OR hook up a scanner that is capable of clearing codes, and hope that it won’t come back on. But don’t bet on it..
2 people found this useful
Thanks for the feedback!
Follow

Luke Evans plays Vlad Tepes, the man who would later be known as Dracula. Do you think Luke does a convincing job at portraying a vampire?

View Full Interview

How do you reset the Check Engine Light on a 1992 Toyota Corolla?

One user's answer   There are three ways to shut off the "Check Engine Light" discount  battery (not recommended): use a scan tool and delete code, or wait  40-80 key cyc (MORE)

Most Common Check Engine Light Problems

Discover why a check engine light comes on. Review two of the most common check engine light problems facing motorists on modern vehicles. Learn the difference between a nuisa (MORE)

What You Need to Know when Your Car's Check Engine Indicator Light Comes On

If you drive a car on a routine basis, it is likely that you have had at least one experience with an illuminated check engine light. Whether it is in the form of a phrase or (MORE)

What is a Check Engine Light

Understand the genetic makeup of a check engine light. Boost your automotive knowledge by discovering why the light comes on and what the set codes mean. Sidestep diagnostic c (MORE)

How to Pull Check Engine Light Codes

The illumination of a check engine light on the dash of an automobile is a fairly common occurrence. This article addresses how to pull check engine light codes from OBDI and (MORE)

Applications to Diagnose Check Engine Lights

Android and i Pad applications that diagnose automotive engine lights via a Bluetooth wireless connection is an exciting and quickly expanding marketplace. Unfortunately some (MORE)

How do you reset the check engine light on a 2001 Toyota Avalon?

 Answer   First, if it is something like a loose gas cap, just tighten it and it will reset itself in the next 100 miles or so. If it is something else, like a leaky g (MORE)

How do you reset a check engine light on a 1996 Toyota Camry LE?

 Answer   First, if it is something like a loose gas cap, just tighten it and it will reset itself in the next 100 miles or so. If it is something else, like a leaky g (MORE)

How do you reset the check engine light on a 1996 Toyota Camry?

%REPLIES%    Answer   Go to eBay and search "obdII" and buy one, they run about $50.00 including shipping. There are two types, ISO for Chrysler and some Japanese, (MORE)

How do you reset the check engine light on a 2003 Toyota Camry?

The best way:    Take it to your local retail auto parts store. Most of these stores  will plug in their scan tool and tell you what turned on the light.    If it i (MORE)