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How to fix dtc u001

Vehicle would not start

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2002 chevy venture security problem


Yea , what would you like to know ? How to bypass it , fix rthe right way ? What ? The normal thing to do would be to take it to a qualified repair shop that has the proper diagnostic tools to check for DTC'S if any are available .

DTC 006
DTC B2734
DTC B2960
DTC B3031
DTC B3055
DTC P1626
DTC P1630
DTC P1631

Replacing modules an trying to disconnect it doesn't work , It's made so the vehicle can't be stolen . Software programmed in the vehicle control modules .

Mar 15, 2017 | 2002 Chevrolet Venture

1 Answer

How can I fix my stabilitrak on my 2010 chev impala


What's wrong with it ? Need more info . Light on ? The first thing to do would be to have the vehicle checked for DTC'S - diagnostic trouble codes ! Get a diagnostic direction , not just replacing parts . Need a professional grade scan tool . Plus reading how stabilitrak works would also be a good Idea . StabiliTrak General Motors Stability Control

Vehicle Stability Enhancement System (VSES)
The vehicle stability enhancement system (VSES) adds an additional level of vehicle control to the electronic brake control module (EBCM).
Yaw rate is the rate of rotation about the vehicle's vertical axis. The lateral accelerometer measures the sideways acceleration of the vehicle. The VSES is activated when the EBCM determines that the desired yaw rate and lateral forces do not match the actual attitude of the vehicle.
The desired attitude of the vehicle are calculated from the following inputs:
• The position of the steering wheel
• The speed of the vehicle
• The lateral, or sideways acceleration of the vehicle
• Yaw rate of the vehicle
• Master cylinder brake pressure
The difference between the desired yaw rate and the actual yaw rate is the yaw rate error, which is a measurement of oversteer or understeer. If the yaw rate error becomes too large, the EBCM attempts to correct the vehicle's yaw motion by applying differential braking to the appropriate wheel. The amount of differential braking applied to the left or right front wheel is based on both the yaw rate error and side slip rate error.
The VSES activations generally occur during aggressive driving, in turns, or on poor road conditions, without much use of the accelerator pedal. When braking during VSES activation, the pedal pulsations feel different than the ABS pedal pulsations. The brake pedal pulsates at a higher frequency during VSES activation.

There a number of DTC'S that can set .
DTC C0035-C0050
DTC C0110
DTC C0131
DTC C0161
DTC C0179
DTC C0186
DTC C0196
DTC C0201
DTC C0242 or P0856
DTC C0245
DTC C0292
DTC C0558
DTC C0561
DTC C0563
DTC C0710

Do you know what DTC'S are , and a diagnostic flow chart ?

Feb 21, 2017 | Cars & Trucks

1 Answer

Thinking 99 Chevy Astro van security light on solid band starts with cuts down is there anyway to bypass security without spending a lot of money


If the light is on there are code stored ! Not in the PCM/ECM engine computer . In the BCM , do you know what that is ? body control module ! Need a factory scan tool or equivalent to check !
DTC B0688 Security System Indicator Circuit High
DTC B2947 Security System Sensor Power CKT Low
DTC B2948 Security System Sensor Power CKT High
DTC B2957 Security System Sensor Data Circuit Low
DTC B2958 Security System Sensor Data Circuit High
DTC B2960 Sec Sys Sensor Data Incorrect but Valid
DTC B3031 Security System Controller in Learn Mode
DTC B3033 Security System Indicates Tamper
DTC C0559 EEPROM Checksum Error
Why does everyone want to chop up things , by pass etc... The right fix could be cheaper then ruining your vehicle . Chopping up wiring harnesses . Their are by pass module , don't know how much they are . It may or may not fix the problem . Pulling the code and doing the diagnostics is still the best solution .

Jan 07, 2017 | 1999 Chevrolet Astro

1 Answer

I have a 2000 buick century 3.1 my security light still staying on after i changed the key cylinder and the electrical key switch whatelse can that be ??


Having the vehicle checked for codes should have been the first thing done . Security light on ,a code is stored in the control module that controls the anti-theft system ! This is if you want it fixed right !
Important: If the wrong ignition key is used in an attempt to start the vehicle, a Data Trouble Code (DTC) will be set and the Body Control Module (BCM) will not send a fuel enable or starter enable message to the Powertrain Control Module (PCM) for three minutes even if the correct ignition is used.
The Pass-Key II® Theft Deterrent system prevents vehicle theft by disabling the starter motor and fuel system. If the Body Control Module (BCM) dose not identify the use of the correct ignition key to start the vehicle, the (BCM) will communicate a message to the Powertrain Control Module (PCM) which will disable the crank relay and fuel delivery to the engine.
When the (BCM) identifies the use of the correct ignition key (resistor pellet) to start the vehicle, the (BCM) will send a fuel enable and starter enable message to the (PCM) which will allow the vehicle to start.

DTC B2957 Security System Sensor Data Circuit Low
DTC B2958 Security System Sensor Data Circuit High
DTC B2960 Sec Sys Sensor Data Incorrect but Valid
DTC B3031 Security System Controller in Learn Mode
DTC B3094 No Response from ECM/PCM Received

or you can do a by pass that may or may not work ! You could measure the resistance of the pellet on the side of the key , then go to radio shack a by a resistor of the same value ! Then find the wires under the dash that come from the ignition switch ! Solder the resistor into the harness side wires , not going back to ignition switch . The wires break or contacts inside ignition switch do . You could check resistance with ohm meter . Put key into the ignition switch , find those wires i said about before . Check resistance at the wires under dash , is it the same resistance as pellet ?

Dec 17, 2016 | Buick Cars & Trucks

1 Answer

How do you put the resistor in the passlock system on a Oldsmobile Alero


You don't say if the security light is lit ? Is it ? If not , it's not a anti-theft system problem . An the passlock system on your vehicle the passlock sensor is part of the ignition lock cylinder . No resistor ! If the security light is lit you need to have it check for codes . There are a number of DTC'S that can set .
DTC B2947
DTC B2948
DTC B2957
DTC B2958
DTC B2960
DTC B3031
DTC B3033
DTC P1626
DTC P1630
DTC P1631
DTC P1632

The Passlock™ system is provided in order to prevent vehicle theft if the ignition lock cylinder is forced to rotate or the ignition switch is operated while separated from the ignition lock cylinder case. The body control module (BCM) provides security system sensor power and low reference for the Passlock™ sensor. The BCM also measures the security system sensor voltage.
When the correct key is used to start the vehicle, a magnet on the lock cylinder passes close to the Passlock™ sensor within the ignition lock cylinder case. The magnet activates the security hall effect sensor in the Passlock™ sensor which completes a circuit from the security sensor signal circuit through a resistor to the security sensor low reference circuit. The resistance value will vary from vehicle to vehicle. The BCM will measure the voltage on the security sensor signal circuit and compare this voltage to a previously learned voltage. If the voltage measured is within the valid range, the BCM will send a class 2 message to the powertrain control module (PCM) to enable vehicle starting. If the voltage measured is not within the valid range, a class 2 message will be sent to the PCM to disable starting of the vehicle.

Nov 04, 2016 | Oldsmobile Cars & Trucks

1 Answer

95 sl500 check engine light reset and comes back on after it sits over night. any idea?


What code is it throwing ? Some codes are what are called two trip codes ! You clear the codes an start an drive the vehicle ,no check engine light . Park the vehicle over night an bam next time you start an drive the vehicle the check engine light comes back on .

??There are two types of DTC's, 1 trip DTC's and 2

trip DTC's

??A 1 trip DTC is for a condition that requires

immediate attention such as a catalyst damaging

misfire.

??A 2 Trip DTC is one that a condition must be found

during 2 consecutive trips such as an EGR fault.

??Most Monitors do not set a DTC and light the MIL

when a vehicle fails a test for the first time during a

DRIVE CYCLE. If a test is failed on a second

consecutive DRIVE CYCLE the MIL will light and a

DTC is stored in the vehicles powertrain control
module (PCM).

Feb 07, 2016 | Cars & Trucks

1 Answer

My top does not work


Diagnostic Starting Point - Roof (Folding Top)
Begin the system diagnosis with the Diagnostic System Check - Vehicle in Vehicle DTC Information. The Vehicle System Check will provide the following information:
?€¢
The identification of the control modules which commands the system


?€¢
The ability of the control modules to communicate through the serial data circuit


?€¢
The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of Vehicle System Check will identify the correct procedure for diagnosing the system and where the procedure is located.
Have vehicle scanned for DTC'S . The power roof has a number of DTC'S that can be set ,could make diagnosing easier !
DTC B1010 DTC B1296 DTC B1307 DTC B1325 DTC B1335 DTC B1345 DTC B1395 DTC B316A DTC B3602 DTC B3669 DTC B366A DTC B366B DTC B366C DTC B366D DTC B366E DTC B3674 DTC B3675 DTC B367A DTC B367B DTC B367F DTC B3680 DTC B3683 DTC B3685
There are a number of sensors for your convertible top !
DTC B1010 08: System Sensors Data Mismatch signal invalid
DTC B1010 08 sets when the folding top control (FTC) module detects a switch is not in the proper state when compared to other switches. The conditions that cause DTC B1010 08 to set may also set other Folding Top DTCs. The position and direction of the folding top when the fault occurs will determine whether DTC B1010 08 will set or another Folding Top DTC will set. If any Folding Top DTCs between DTC B1296-DTC B3685 are set, diagnose those DTCs first. After diagnosing any other Folding Top DTCs, clear DTCs and operate the Folding Top to see if DTC B1010 08 resets before diagnosing it.
DTC B1296 01: Movable Roof Header Unlatched Sensor Circuit short to battery

DTC B1296 06: Movable Roof Header Unlatched Sensor Circuit short to ground or open

DTC B1296 58: Movable Roof Header Unlatched Sensor Circuit incorrect reaction after event

DTC B1296 59: Movable Roof Header Unlatched Sensor Circuit circuit/component protection time out
You best bet is to take your vehicle to a ASE certified repair shop or to a GM dealer .
The f

Jan 14, 2016 | 2007 Pontiac G6 GT Convertible

1 Answer

Hwo to fix the code p1330 for a Kia sorento 2004


Sounds like a shorted wire.. This is from a Kia forum on the subject:

The ECM computes ignition timing in response to the signals from several sensors. The timing is fixed during the start-up phase. However, when the engine has been started and the vehicle is driven away, the ECM computes the optimum timing based on the engine speed, load and temperature.The ignition timing is fixed BTDC 5 and DTC P1330 is set when connecting Ignition control terminal of Data Link Connector and ground. If disconnect Ignition control terminal of Data Link Connector and ground, the DTC is erased automatically.Make sure to check for short circuit to ground between Ignition control terminal of Data Link Connector and chassis ground when DTC is set.

May 20, 2011 | 2004 Kia Sorento

1 Answer

DTC shows up on computer at auto zone as a bad code and i dont know what DTC means so i cant fix it if i dont know what it means so my question to you is what in the world does DTC mean ? Im working on a...


DTC stands for Diagnostic Trouble Code. My question is why did you have the vehicle checked out in the first place? Is the check engine light on? What was the code number and did it start with P0 or P1. If you don't remember then have the code(s) cleared and operate the vehicle until the code(s) reappear. The code or codes can help you to determine where to start looking.

May 14, 2011 | Chevrolet C3500 Cars & Trucks

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