Diagnostic codes for 1996 gmc pick-up po102,po340,po441

SOURCE: 2003 GMC throttle position sensor

I had the same problem with my 2003 denali and came to find out that it was the battery causing the problem. the battery with sufficient power will dictate the tps. if the battery is low or bad, it won't have enough juice to allow the tps to. work. get your battery checked.

SOURCE: diagnostic Troubleshooting Codes for 1996 Chrysler Sebring Cvtble

FIRST YOU TURN IGNITION SWITCH ON WITH ENGINE OFF.LOOK AT MIL LIGHT IT SHOULD COME ON 3 SECONDS THEN GO OFF IT NOT THEN YOU GOT BURN OUT BULB OR A CIRCUIT PROBLEM.IF ALL IS WELL. ATTEMPT TO START ENGINE.TURN OFF IGNITION. WITH OUT STARTING ENGINE.TURN IGNITION ON OFF ON OFF AND WITHIN 5 SECONDS RECORD 2 DIGIT DIAGNOSTIC TROUBLE CODES.DISPLAYED BY FLASHING MIL LIGHT.YOUR MIL FLASHES WILL BE YOUR CODE LIKE THE MIL LIGHT FLASHES 5 TIMES THEN PAUSE FLASHES 3 TIMES THAT CODE 53 THAT YOUR CODE.IT LIKE MORSE CODE.WHEN DONE TURN OFF IGNITION SWITCH.GO TO AUTO ZONE OR ADVANCE AUTO GET HAYNES COMPUTER CODE BOOK. TO GET CODE MEANING OR WHAT SENSOR GONE BAD.HOPE THIS CAN BE SOME HELP.

SOURCE: 1996 chevy cavalier DIAGNOSTIC CODES

TCC is torque converter clutch circuit which helps tranny shift smoother and is in front off tranny.
$250
Random cyl miss. Most likely bad plug wire or faulty coil pack $45
Transmision pressure switch sends info to computer about tranny pressure and the switch controls it. $400

SOURCE: diagnostic code p1899 on my 2000 dodge ram 1500

that code is "P/N Switch Stuck in Park or in Gear"

ZJ Limited

• 17989 Answers
• Posted on Jun 30, 2010

SOURCE: 1994 Chevrolet 2500 Trouble codes. I

DTC 12 -
When terminals "A" and "B" have been connected, the ignition switch turned to the "ON" position with the engine not operating, the MIL (Service Engine Soon) should flash DTC 12 three times consequently. This will be the following flash sequence: "flash, pause, flash-flash, pause, flash, pause, flash-flash, pause, flash, pause, flash-flash." DTC 12 indicates that the control module diagnostic system is operating properly. If DTC 12 is not indicated, and a fault is present within the diagnostic system itself, it should be addresses by consulting the appropriate diagnostic chart in this section.

The MIL (SES) will indicate a diagnostic trouble code (DTC) three times if a DTC is present, or it will simply continue to output DTC 12. If more than one DTC has been stored in the control module memory, the DTC(s) will be displayed from the lowest to the highest with each DTC being displayed three times.



DTC 32 - Exhaust Gas Recirculation (EGR) Error
EGR open command did not change the fuel mixture when the command was given during off idle operation. EGR opening should cause the mixture to be slightly richer because of the low oxygen content of the exhaust gas. EGR position signal is also monitored to verify EGR movement.

The EGR relies on a certain amount of exhaust back pressure to work properly. Now that you have lowered the back pressure, it can't work. Have you tried a new EGR valve? You may need a service manual with an EGR diagnostic chart to make sure, but I think the duals are the problem. Plus the O2 sensor is only looking at one side of engine instead of both.

Keep in midn this procedure to Clearing Diagnostic Trouble Codes:
To clear the DTC's from memory of the control module, either to determine if the malfunction will occur again or because the repair has been completed, the Tech 1 Scan Tool should be used to clear the DTC's. If a Tech 1 Scan Tool is not available the following must be perform'd when all repairs have been completed. This will allow all DTC's to be cleared:
1. Ignition "OFF."
2. Ground diagnostic terminal "A" to "B" of DLC (Data Link Connector).
3. Ignition "ON."
4. Fully apply brake pedal.
5.Fully apply accelerator pedal.
6. Check MIL (Service Engine Soon) for DTC 12.
7. Release brake pedal.
8. Release accelerator pedal.
9. Check MIL (Service Engine Soon) for DTC 12.
10. Turn ignition "OFF."
11. Remove Jumper from DLC connector.

NOTICE: To prevent control module damage, the key must be "OFF" when disconnecting or reconnecting module power.

Good luck.