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OBD Diagnostic Codes
Most vehicles generate computer codes used for diagnosing simple and complex problems. These codes help service mechanics more efficiently locate and repair vehicle problems.
763 Questions
How do you find the codes for a 97 Nissan Altima?
If you are talking about the computer codes, then with a OBD2 code reader. If you don't have a scanner to read the codes, remove the plastic panel on the center console near the accelerator pedal. you will see the ECU. On your left closest to the firewall there is a screw that may still be covered with cellophane. Turn the ignition switch to run without the engine running. Push through the cellophane with a strait blade screwdriver and turn the screw clockwise until it stops and hold it for two seconds. Turn the screw counter-clockwise and then count the long flashes and short flashes on your check eng light. Write the flashes down on a piece of paper especially if there are multiple codes.
In order to find your codes, you don't need to plug into the obd2 port. On the bottom right side of the diagnostic port, there should be two pins rather close together. My recommendation is to go to Auto Zone. Some of their stores actually have a key for checking GM obd1 systems. It looks like a key, and has two prongs on it that plug right in to where you need to check your codes. If your local store does not have one, then my advice is to look on the port and find the two bottom prongs that are closest together and jump them.
I have the exact same pinout on my 1995 Buick LeSabre. I have been researching this issue for some time now. The VECI label abve the radiator in my car states "OBD 1 Certified." However, I believe this is only stated because the pinouts of the connector are wrong. I have the VIN L engine, and all technical docs for that engine point to it being controlled by a PCM. PCMs do not report codes by flashing the SES light, only GM ECMs do. GM cars with an ECM and a 16-pin J1850 non-OBD-II connector on them, have a pin-out of 4,5,6,9,12,16. You short pins 5 and 6 to receive diagnostic trouble codes via the Service Engine Soon light. As you can see, those pins do not light up with our common connectors. Our connectors use pins 4,5,8,9,14,16. What I can tell you about this connector is as follows: 4=Chassis Ground, 5=Signal Ground, 8=Keyless RF Trigger (short to 5 to enter program mode), 16=Battery+. (Note 4,5=Ground 16=Battery+ are standard pins for the OBD-II standard. Yet another thing that points to an OBD-II serial uplink.) 1995 was a transition year for GM, in many different aspects including OBD-II. I believe what happened, what the pins were installed in one order believing that they conformed to standard, and then the standard changed before finalization. For more information on this, check out my regular posts to Automotive Forums.com in the Buick LeSabre forum. This is my latest: http://www.automotiveforums.com/vbulletin/showthread.php?t=307153
1993 Grand Am 3.3L V6 (6-204) - Solved intermittent "Code 42 - electronic spark timing" issue by replacing Mass Air Flow sensor, after checking all wires in harness (and replacing some) between the ECM and ICM, checking all connections, and replacing all the other sensors. All work prior to replacing MAF sensor improved performance but did NOT solve intermittent Code 42 problem. Never got a "MAF sensor" Code 34.
What does the 2004 ford f150 error code p2111 mean?
Trouble code P2111 means: Throttle Actuator Control System - Stuck Open
What is error code P0455 for check engine light in ford mustang 2000?
Trouble code P0455 means: Evaporative Emission System Leak Detected (gross leak/no flow)
How do i fix bobcat code L 7404?
I'm asking the f question, if I had the I wouldn't I wouldn't be asking...Bunch of f morans
What does error code p0301 means for a Ford Taurus 2003?
P0301 is cylinder number one misfire detected.
P0301 is cylinder number one misfire detected.
Ford air bag error code 4 1996 e250 van?
check again!! It's probably 44 or 45.....There is a "pattern" here that repeats 3 of 4 times. Differentiate between the short pauses and the long pauses. It will flash 4 times...then a short pause...then 4 more times...or maybe 5 more times...When the code is done, there will be a slightly longer pause, and the pattern will repeat itself. After you get the correct code, maybe I can help you. Good luck.
How do you fix a 1998 Ford Ranger pickup with an error code of 1401?
P1401 is DPFE sensor circuit high, check out this tutorial to replace the sensor on your Ford
What does error code PO172 for the check engine light mean on a ford mustang 3.8lt?
The error code means "bank one fuel too rich". Too much gas spraying in (for a number of possible reasons)
What does error code PO715 mean on a 2001 ford ZX2?
Trouble code P0715 means: Input/turbine speed sensor circuit malfunction
What does code po510 means closed throttle position swith
Purge flow incorrect.
The computer has told the purge valve to open and saw to much change or no change in how the engine ran.
This means that the electrical components are hooked up but a vacume line is unhooked or plugged. The evap system is damaged so the the purge valve does not have anything to do. Rusted out or damaged lines under the car can cause this.
Where is obd socket on vivaro vans?
The obd socket is placed under the stearing. Pull out the small plastick cover.
What is p1391 on a 2001 Chrysler Concorde 2.7?
Trouble code P1391 means: Intermittent loss of CMP or CKP
2002 Ford Explorer sport error code p1504?
According to my Chilton repair manual : P1504 - idle air control (IAC) valve and / or circuit fault
Trouble code P0339 means: Crankshaft position sensor "A" circuit intermittent
What does the 2004 ford F150 error code P2106 mean?
Trouble code P2106 means: Throttle actuator control (TAC) system-forced limited power mode
What does the diagnostic error code 9352 mean on a 2005 ford explorer?
9352 is not a valid OBDII code for any vehicle.
How do you fix error code on a 2000 ford?
I have error codes for ford ka 2000:
- P1120
- P1000
- P1125
What they means?
