Malfunction Indicator Lamp refers to any light that indicates a malfunction with a system like ABS light, Check Engine Light, Airbag light

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2000 Jetta runs rough, shudders on cold start only on wet days.

This is an issue I've had off and on for, embarrassingly, at least a year: On misty or wet mornings, everything starts out fine but, a few minutes into the drive (like clockwork. I even know the ...
5
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3answers
117 views

Mode 02 - Freeze frame data use

I got some data on sending 0202 command (Mode $02, PID 02). It is the freeze frame data. I don't understand why does anyone need the data? Do anyone (including mechanics) ever open Freeze frame data? ...
15
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2answers
12k views

Why would a new gas cap cause the “check engine” light to shut off?

This happened to a friend of mine: The "check engine" light came on in his truck (Toyota). He replaced the gas cap and the light shut off. Then I also had a "check engine" light come on in my 1994 ...
7
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1answer
89 views

Erratic single fault code: P0420, P0440, P0446. Normal variance, or indicative of something deeper?

Working on diagnosing an evap/emission/fuel system problem on my Toyota 2003 Corolla. More on that in this question. On 3/2, I saw a mechanic use his handheld OBD to read a code P0420. On 3/12, ...
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5answers
499 views

Looking for easy ways to set error codes

A lot of people want the check engine light to go off. I am doing some research for school and I want it to come on. Does anyone know some simple problems or faults I can create with a vehicle in ...
6
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3answers
314 views

2002 VW GTI 1.8T - O2 sensor fault code only when exceeding 70mph

During my last roadtrip when I was driving at about 80mph on the highway (75 speed limit) a pressed the brakes abruptly after being cutoff by another vehicle, then my MIL came on. When I checked the ...
2
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1answer
421 views

Getting MIL on a Dodge Grand Caravan 2012 without an OBD device

I have a dodge grand caravan 2012 and yesterday, the check engine light went on. I know there's usually a way to get the error codes without an OBD device... I was able to do this on my old caravan ...
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1answer
3k views

How do I retrieve the check engine codes without a scanner for a 1999 Dodge Ram Van 3500?

I'm sure the answer to this applies to many models of Dodge and probably Chrysler, Jeep, and Plymouth, too. I found the answer for newer (2001 Ram truck) vehicles but nothing I've found works on my ...
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1answer
622 views

when i start my 1500 dodge ram rpm goes up and down in morning

When I start my Dodge Ram 1500 in the morning, the RPM goes up and down for about 4 times from 1000 to 2000 and it sounds like the truck is gonna shut off. It also has a check engine light on. Just ...
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2answers
51 views

Manually starting MIL(Malfunction Indicactor Light)

I want to know how can i manually start my Malfunction Engine Light (Check Engine Light) ? i actually want to generate a DTC so that i can see it on a OBD Scanner. I know even altering or removing/...
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2answers
3k views

Cost of turning off airbag light on '96 Nissan Maxima

A little while ago the airbag light on my 1996 Nissan Maxima started flashing. My regular mechanic told me that the airbag was fine, if needed it would deploy, and that the issue was most likely ...
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1answer
329 views

Is it my ABS sensors that are bad on a 95 Safari Van?

When I drive on snowy roads, the brakes lock up nicely. When I brake on dry roads, the van hops all over the place when I brake.. to the point I feel like the front end is going to fall off. Could ...
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2answers
364 views

1991 Bonneville Idles Poorly When Stopped

Recently my '91 Bonneville has been having an issue with idling while stopped, which may or may not have coincided with Service Engine Soon light turning on. The main symptom is an overall drop in the ...
3
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2answers
2k views

2000 Nissan Maxima Service engine light

The dealer diagnosed it and says it got tripped by catalytic converter and rear oxygen sensor. The total estimate was around $2000. The blue book value on his car is around that amount. Is there a way ...