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DTC CODE CHECK ENGINE LIGHT

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  • Dodge Master
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Go to autozone or some place like that. They read them for free.

Posted on Jan 01, 2015

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

jagjeffery
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SOURCE: 1992 Dodge d350 gas

Code 41 is for the Alternator field curcuit and the 33 is for the A/C curcuit .. Ck your battery grounds and for corrosion at the alternator connections . Also ck the A/C compressor relay and the ignition power relay ( or replace them they are cheep) Both codes have to do with low votage

Posted on Aug 05, 2012

  • 5278 Answers

SOURCE: engine check light on

Map sensor: Manifold Absolute Pressure sensor- it's a measure of manifold vacuum that is sent to engine computer; so it can figure out engine running conditions and how much gas to add for the correct air-fuel mixture.
You probably need a new sensor. I don't know what newmatic means? But, pneumatic is of or pertaining to air, so hey, you better diagnose this before buying a new map sensor- just check if your vacuum hoses are not deteriorated from age, check if you still have a good vacuum signal from the intake manifold. If you were to hook up a vacuum gauge to a intake manifold tap-like the one going to your map sensor-with the engine at normal idle, the gauge should show a nice steady needle somewhere between 16 and 22 inches on the dial face. It's a measure of inches of mercury if you understand science-most people don't so the dial face is very large and you just understand it as inches of vacuum-how much lower the air pressure is inside the intake, versus outside air pressure. All engines create manifold vacuum, and the best, newer engines have a very steady vacuum at idle of 21, or 22 inches on the gauge. That's what you look for, 16 and steady is okay, a good map sensor would be sending a good signal to the computer by a varied voltage signal: manifold pressure is known good, so to speak.

Now manifold pressure varies under different running conditions. But by looking at a vacuum gauge, you are confirming that your manifold vacuum is good, you have no vacuum leaks, no air or vacuum leaks anywhere that will upset the apple cart, and cause the computer to question the info from the map sensor.
If your vacuum reading is way below 16 inches, like 10 inches, or 12, or 14 and holding steady, well, don't you see, you have a major vacuum or air leak somewhere. Vacuum hoses, pcv hose, intake manifold gasket...somewhere, your engine is sucking in extra air, and it's causing havoc with the engine management controls. It's where a lot of poor running conditions occur. So, try a used or new map sensor, or buy a vacuum gauge for $20. It saves a lot of time looking for vacuum leaks, and it's also very good at detecting valve problems and other internal engine conditions. You just have to learn how to use it, and understand what it is telling you.
I think Dodge put the map sensor maybe on the firewall on the passenger side, not sure, it's been a lot of years ago.

Posted on Nov 20, 2013

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Why did you change the MAP sensor? Was there a DTC code indicating problems? Do you still have the same code? Have you reset the codes (if that was the only code displayed)? Why did you change the battery?
If your check engine light is on, please provide the DTC code and a brief history of the problem and what you have done to resolve it.

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Connect white (test lead) and black (ground lead) wires that are branched from harness approximately eight inches from ECM. After leads are grounded, the "Check Engine" light will flash the diagnostic trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.I-MARK 84-85
Connect male and female test leads taped into wire harness near ECM. After leads are connected, the "Check Engine" lamp will flash the trouble codes. The DTC's are indicated by the flashing CEL.
FLASH, FLASH, pause, FLASH, FLASH, FLASH = Code 23.
If only one diagnostic trouble code is stored, the DTC will repeat continuously until test leads are disconnected. If more than one diagnostic trouble code is stored, each DTC will repeat three times, starting with the lowest, then proceed to the next DTC. After all DTC's have been displayed, the pattern will repeat.
86-87 Impulse located near the ECM connector, is used to actuate the Engine Control Module (ECM) trouble code memory within the module. Two terminals (A and C) of this connector are used to activate the diagnostic trouble code system in the ECM. With the ignition switch turned On, engine Off, connect a jumper wire between terminals A and C. The "Check Engine" lamp will begin by flashing a DTC 12. DTC 12 = flash, pause, flash, flash. There will be a longer pause and a code 12 will repeat two more times. This code indicates the self-diagnostic system is operating. The cycle will then repeat until the engine is started or the ignition is switched Off. In most cases, DTC's will be checked with the engine running since no DTC's other than DTC 12 or 51 will be present without the engine running. Remove jumper wire from ALDL connector before starting engine. Reconnect jumper wire after engine is running.

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The ECM test connection is located under the center console.
A built-in, self diagnostic system will identify problems in the throttle body fuel injection system. When a problem is detected, the diagnostic system will illuminate the "Check Engine" light.
When the engine is started, the Check Engine light should turn off.. If the light remains lit, the self diagnostic has detected a problem. To determine where the problem exists, ground the "Test" terminal of the connector with the ignition On, engine Off and watch the check engine light. Each DTC will flash three times (lowest to highest).

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Sounds like you have a engine check light on ( engine management light ) you will need to take the car to a garage that have a computer to read the dtc stored in your car ecu , dtc ( diagnostic trouble code )

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What is service engine light code 12 mean



READING CODES USING MIL (CHECK ENGINE) LAMP

Be advised that the MIL or CHECK ENGINE light can only perform a limited number of functions and it is a good idea to have the system checked with a scan tool to double check the circuit function.

  1. Within a period of 5 seconds, cycle the ignition key ON - OFF - ON - OFF - ON .
  2. Count the number of times the MIL (check engine lamp) on the instrument panel flashes on and off.

The number of flashes represents the trouble code. There is a short pause between the flashes representing the 1st and 2nd digits of the code. Longer pauses are used to separate individual 2-digit trouble codes.
An example of a flashed DTC is as follows:


Lamp flashes 4 times, pauses, then flashes 6 more times. This denotes a DTC number 46. Lamp flashes 5 times, pauses, then flashes 5 more times. This indicates a DTC number 55. DTC 55 will always be the last code to be displayed.


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Fig. Fig. 2: Diagnostic trouble code chart (1 of 2)-1995-97 engines


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Fig. Fig. 3: Diagnostic trouble code chart (2 of 2)-1995-97 2.0L engines

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