Question about OEM 1998 GMC G25/G2500 VAN Radio / CD Player vl432075g CD player remote, single disc Bakersfield, California

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Dtc p0143 and p0144

Both of these codes are present with my vehicle and i am having trouble preventing the m.i.l. from comin g on

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Why is my security light coming on in my 03' chevy impala when driving im scared it will stop on me when doin tht

Hard to say why the light comes on , may have a diagnostic trouble code stored in the BCM - body control module ! Do you have a bunch of other key's on the same ring as the vehicle key ?
Passlock™ System
The theft deterrent system has been incorporated into the body control module (BCM). The theft deterrent system prevents the vehicle operation if the correct key is not used in order to start the vehicle. The ignition key turns the ignition lock cylinder. The cylinder rotation produces an analog voltage code in the Passlock™ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the previously learned voltage code. If the codes match, a class 2 message is sent from the BCM to the powertrain control module (PCM). The message enables the fuel injectors and the crank relay.
The design of the Passlock™ system is to prevent vehicle theft by disabling the engine unless the ignition lock cylinder rotates properly by engaging the correct ignition key. The system is similar in concept to the passkey system. However, the Passlock™ system eliminates the need for a key mounted resistor pellet. The components of the Passlock™ system are as follows:
• The ignition lock cylinder
• The ignition switch
• The Passlock™ sensor
• The body control module (BCM)
• The SECURITY indicator
• The powertrain control module (PCM)
When anyone of these codes set the BCM will turn on the SECURITY light !
DTC B2947
DTC B2948
DTC B2957
DTC B2958
DTC B2960
DTC B3031
DTC B3033
DTC P1626
DTC P1629
DTC P1630
DTC P1631

Your best bet , take it to a qualified repair shop an have it checked !Here are some reasons for the light to come on .
Conditions for Setting the DTC
The BCM detects a short to ground on the Passlock sensor power circuit for 1 second, with the ignition switch in the ACCESSORY, ON, or START position.
The PCM has detected a loss of the state of health serial data message from the theft deterrent system.

May 29, 2017 | Cars & Trucks


Obd-ii error codes

OBD-II (Check Engine Light) Trouble Codes Welcome to, your headquarters for everything OBD-II related. For more information on what OBD codes are, OBD-II codes explained, explanation of fuel trims, or answers to other questions, visit our FAQ area. The most common OBD-II codes are P0xxx powertrain codes, which are listed below on this page, along with P2xxx generic & P3xxx generic codes (please scroll down). For the other OBD-II codes, choose from Bxxxx - B Codes - OBD-II Body Codes or Cxxxx - C Codes - Chassis Codes, and Uxxxx - U - Network Codes. If your DTC (diagnostic trouble code) begins with P1xxx, that means it's a manufacturer specific code. For more information on P1 codes, choose your vehicle make here: Acura Audi BMW Chevrolet Dodge / Chrysler / Jeep Ford Honda Hyundai Infiniti Isuzu Jaguar Kia Land Rover Lexus Mazda Mitsubishi Nissan Subaru Toyota VW

Please use our new & improved search engine to find information on your trouble codes. Search Now! This list contains standard diagnostic trouble codes (DTC's) that are used by some manufacturers to identify vehicle problems. The codes provide below are generic codes that may not apply to all vehicles. Vehicle manufacturers may use manufacturer specific DTC codes that are different from the codes shown below. Foreign vehicles may also use DTC codes different from the generic DTC codes. We recommend that you not depend on the DTC codes in this list for vehicle repairs until you confirm the generic DTC codes apply to your vehicle(s). The list below is for information purposes only and is not intended for use in vehicle repairs.

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on Apr 14, 2015 | Cars & Trucks

1 Answer

2000 Pontiac Montana 3400 3.4 V-6. The security system is engaged showing low fuel but its full, the 10min. reset didn't work. What is a hard fault? Please help..

You need to have a scan tool hooked up to read DTC'S diagnostic trouble codes ! These would be hard faults .
DTC 6 Theft Deterrent Relay Control Circuit Shorted
DTC B2734 Coded Key Controller Memory Failure
DTC B2960 Invalid Coded Key Present
DTC B3031 Key Decoder Device in Assem Learn Mode
DTC B3055 Key Not Present.
Do you have another key you can try .

Oct 27, 2016 | Pontiac Cars & Trucks

1 Answer

Location of the speed sensors on my 1999 ford explorer

Vehicle Speed Signal
The vehicle speed signal is generated by the rear anti-lock brake sensor and sent to the 4-wheel anti-lock brake system (4WABS) module. The 4WABS module sends the vehicle speed signal via circuit 679 (GY/BK) to all systems which require a vehicle speed signal input.
The electronic speedometer receives a speed signal from the 4WABS module.
GEM/CTM Diagnostic Trouble Code (DTC) Index
GEM/CTM Diagnostic Trouble Code (DTC) Index DTC Description DTC Caused By Action P0500 Vehicle Speed Signal Circuit Failure GEM REFER to Section 308-07A . Take your vehicle an have it diagnosed , before you buy parts you don't need . Just a suggestion , could be a wiring problem , the speedometer gauge , computer etc...

Sep 25, 2016 | 1999 Ford Explorer

2 Answers

Why is it difficult to start?

Check the code first.

Oct 18, 2015 | Cars & Trucks

1 Answer


  • Feb 7/11 - P0405
  • Jan 11/11 - P0336 - P0326
  • Dec 28/10 - P0217 - P0218 - P0163 - P0230 - P0231 - P0232
  • Dec 9/10 - Trouble Codes: P0170 - P0173 - P0162 - P0154 - P0142
  • Dec 6/10 - More DTC articles: P0157 - P0158 - P0160 - P0200
  • Nov 30/10 - DTC articles posted: P0505 - P0156
  • Nov 18/10 - More new articles: P0143 - P0144 - P0146 - P0147 - P0152
  • Nov 12/10 - P0120 - Throttle Position Sensor/Switch A Circuit Malfunction
  • Nov 11/10 - ECT Circuit Codes: P0116 - P0117
  • Nov 10/10 - P0111 - IAT Circuit Range/Performance Problem
  • Nov 7/10 - P0110 - Intake Air Temperature Circuit Malfunction
  • Nov 6/10 - P0108 - Manifold Absolute Pressure/Barometric Pressure Circuit High Input
  • Oct 21/10 - P0216 Injection Timing Control Circuit Malfunction
  • Sept 11/10 - Knock Sensor DTCs: P0327 P0332
  • Mar 15/10 - P0607 Control Module Performance Code
  • Mar 4/10 - P0606 PCM Processor Fault DTC
  • Feb 10/10 - New ECT Sensor article
  • Feb 9/10 - P0012 & P0022 - Camshaft Position - Timing Over-Retarded
  • Feb 2/10 - P0115 - Engine Coolantmag-glass_10x10.gif Temperature Circuit Malfunction DTC
  • Jan 19/10 - P0105 - MAP/Barometric Pressure Circuit Malfunction
  • Feb 10, 2011 | 2004 Chevrolet TrailBlazer

    3 Answers

    Reccieved P0141, P0147, P0340 as emission diagnostic trouble codes. What do these mean?

    P0141....O2 Sensor Heater Circuit (Bank 1 Sensor 2)

    P0142....O2 Sensor Circuit Malfunction (Bank 1 Sensor 3)

    P0143....O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)

    P0144....O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)

    P0145....O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)

    P0146....O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)

    P0147....O2 Sensor Heater Circuit (Bank 1 Sensor 3)

    P0340....Camshaft Position Sensor 'A' Circuit (Bank 1 or Single Sensor)

    Sep 20, 2010 | 1997 GMC Sierra

    1 Answer

    I have a 2000 dodge durango with a trouble code p1740 what does it mean


    The Torque Convertor Clutch (TCC) and Overdrive Clutch (O/D) will be tested each time the PCM requests TCC engagement in 3rd gear and O/D.

    The code will set if the expected RPM drop is not achieved while attempting to engage TCC or O/D. This indicates a malfunctioning torque convertor or overdrive clutch.


    Camshaft DTC Present
    Engine RPM DTC present
    Fuel level low
    Misfire DTC present
    Output speed DTC present
    P1765 DTC present
    Park/neutral DTC present
    PTO engaged (if equipped)
    Torque converter clutch DTC present
    TPS DTC present
    Transfer case in low range (if equipped)
    Transmission relay DTC present
    Transmission temperature too cold
    Check transmission fluid-debris
    Check transmission fluid-stall
    3-4 shift solenoid
    Oil pan contains excessive debris
    Shaft or seal damage
    TCC solenoid
    Torque converter

    Aug 15, 2010 | Dodge Durango Cars & Trucks

    2 Answers

    Howdo i enter diagnostic mode 1994 deville

    After entering On-Board Diagnostics, a segment check is automatically performed and then any trouble code stored in computer memory will be displayed. Codes may be stored for the Powertrain Control Module (PCM), Instrument Panel Cluster (IPC), Air Conditioning Programmer (ACP), Supplemental Inflatable Restraint (SIR), Traction Control System (TCS) or Road Sensing Suspension (RSS) systems.
    Each trouble code consists of the system abbreviation: (E: Engine, PCM), (I: IPC), (A: ACP), (R: SIR), (T: TCS), (S: RSS), a three digit code identifier, and the letter C or H. All codes for each system are displayed together, in the order of their three digit number (lowest first). The final digit of the code, a "C" or "H" is used to indicate whether the code is Current or History. A "C" means the fault was still present the last time the diagnostic test was run, while "H" means the failure was not present the last time the code was tested for.
    If no codes are present for a system, a "NO X CODE" message (with "X" being the system i.e. E, I, A, R, T or S) will be displayed. If the communication line to a component is not operating, a "NO X DATA" message will be displayed, indicating that the IPC could not communicate with that system.
    After trouble codes have been displayed, a specific vehicle system PCM, IPC, ACP, SIR, TCS, RSS may be selected for testing.
    The first available system will be automatically displayed (i.e. PCM?). While selecting the system to test, any of the following actions may be taken:
    1. Depressing the "HI" button on the CCC will select the displayed system for testing.
    2. Depressing the "LO" button on the CCC will display the next available system selection. This allows the display to be stepped through all system choices. This list of systems can be repeated following the end of the system list.
    3. Depressing the "OFF" button the CCC will stop the system selection process and return the display to the beginning of the trouble code sequence.
    Having selected a system, the first available test type will be displayed (i.e. PCM DATA?, PCM CLEAR CODES?). While selecting a specific test type, any of the following actions may be taken:
    1. Depressing the "HI" button on the CCC will select the displayed test type. At this point the first of several specific tests will appear.
    2. Depressing the "LO" button on the CCC will display the next available test type for the selected system. This allows the display to be stepped through all available test type choices. This list of test types can be repeated following the display of the last test type.
    3. Depressing the "OFF" button on the CCC will stop the test type selection process and return the display to the next available system selection.
    Selection of "CLEAR CODES?" test will result in the message "CODES CLEARED" being displayed along with the selected systems name. This message will appear for 3 seconds and then return to the next available test type.
    To get out of the diagnostic mode anytime during the test, depress the "AUTO" or "DEFOG" button, or turn the ignition switch "OFF." Trouble codes are not erased if this is done prior to selecting "CODES CLEARED."
    ECC Trouble Code Descriptions:
    • DTC A010 - Outside Temperature Sensor Circuit
    • DTC A011 - High Side Temperature Sensor Circuit
    • DTC A012 - Low Side Temperature Sensor Circuit
    • DTC A013 - In-Car Temperature Sensor Circuit
    • DTC A015 - Sunload Sensor Circuit
    • DTC A037 - Loss of IPC Data
    • DTC A040 - Air Mix Valve (Door) Circuit Problem
    • DTC A047 - Low Refrigerant Charge
    • DTC A048 - Low Refrigerant Pressure
    • DTC A050 - HVAC - Coolant Temperature Too High

    Jan 28, 2010 | 1994 Cadillac DeVille

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