Question about 2003 Chevrolet Silverado 2500HD

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2003 2500 HD code P1518a

I have replaced the TAC wiring harness and still have a code, P1518a (TAC Mod serial data circuit)--and on the display in the dash it says (reduced engine power) any ideas on what the problem is?

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Try to charge the battery.

Posted on Jun 25, 2008

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Wiring diagram for code u0107 2004 avalanche


Do you even know what DTC U0107 involves ?
DTC U0107
Lost Communications With Throttle Actuator Control (TAC) Module

The throttle actuator control (TAC) module and the powertrain control module (PCM) communicate via a dedicated serial data circuit. This serial data circuit is separate from any other serial data circuit on the vehicle. Accurate transmitting and receiving of serial data requires not only good circuit integrity, but also adequate system voltage. This diagnostic test monitors the accuracy of the serial data transmitted between the TAC module and the PCM. If the PCM detects a loss of data or invalid data, this DTC sets.

Diagnostic Aids
Important: Reprogramming the PCM may cause a communication error between the PCM and the TAC. If the PCM detects a communication error, DTC U0107 sets. Clear any DTCs from the memory that may have been set by Reprogramming.
• DTC U0107 sets if the battery voltage is low. If the customer's concern is slow cranking or no crank because battery voltage is low, ignore DTC U0107. Clear any DTCs from memory that may have set from the low battery voltage condition.
• DTC U0107 sets when there is a short to B+ on the TAC module ground circuit. Inspect the fuses for the circuits that are in the TAC module harness--i.e. cruise, brake. An inspection of the fuses may lead you to the circuit that is shorted to the TAC module ground circuit.
Replace the TAC module. Refer to Electronic Throttle Actuator Control Module Replacement .
Did you complete the replacement?

Nov 20, 2016 | Cars & Trucks

1 Answer

U0107 code 2004 avalanche


U0107 CHEVROLET - Lost Communication With Throttle Actuator Control Module.
Possible causes - Faulty Throttle Actuator Control (TAC) module
- Throttle Actuator Control (TAC) module harness is open or shorted
- Throttle Actuator Control (TAC) module circuit poor electrical connection (loose or broken wires)

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TROUBLE CODE 2004 ISUZU U0107


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Take the vehicle to Auto Zone or one of the other auto parts dealers and they will check it for FREE. They can advise you what to do.

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u0107 Lost Communication With Throttle Actuator Control Module

Aug 23, 2015 | Buick Terraza Cars & Trucks

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I have codes 0122 0123 2104 2110 2111 2112 would it be the throttle body


Trouble Code: P0122

Throttle/Pedal Position Sensor A Circuit Low

Possible Causes:


Open ETC TP sensor harness.Short to ground in the ETC TP sensor harness.Damaged TP sensor.SIG RTN circuit open to the TP sensorPCM has failed


Trouble Code: P0123

Throttle/Pedal Position Sensor A Circuit High

Possible Causes:


TP sensor not seated correctly.TP sensor harness is short to voltage.TP sensor harness short to VREF.SIG RTN circuit open to the TP sensor.Damaged TP sensor.PCM has failed.Trouble Code: P2104

Throttle Actuator Control (TAC) System (Forced Idle)

Possible Causes:


Air cleaner and air inlet are not correctly seated.Check for self-test DTCs in all of the vehicle modules.Accelerator Pedal Position (APP) sensor.Throttle Position (TP) sensor.Manifold Absolute Pressure (MAP) sensor.PCM has failed.

Mustang 2006-2008
4.0L V6 VIN N Auto 12

Print


Trouble Code: P2008

Intake Manifold Runner Control (IMRC) Circuit Open (Bank 1)

Possible Causes:


IMRC monitor circuit open


Trouble Code: P2014

Intake Manifold Runner Position Sensor/Switch Circuit (Bank 1)

Possible Causes:


IMRC monitor circuit openMechanical concern - bind, seize, damage or obstruction of IMRC hardware


Trouble Code: P2015

Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 1)

Possible Causes:


Mechanical concern - bind, seize, damage, or obstruction of IMRC hardware


Trouble Code: P2019

Intake Manifold Runner Position Sensor/Switch Circuit (Bank 2)

Possible Causes:


IMRC monitor circuit openMechanical concern - bind, seize, damage, or obstruction of IMRC hardware


Trouble Code: P2020

Intake Manifold Runner Position Sensor/Switch Circuit Range/Performance (Bank 2)

Possible Causes:


Mechanical concern - bind, seize, damage, or obstruction of IMRC hardware


Trouble Code: P2065

Fuel Level Sensor B Circuit

Possible Causes:


Communication link concernDamaged Instrument Panel Cluster (IPC) (MKS)Damaged Instrument Cluster (IC)Damaged PCM


Trouble Code: P2066

Fuel Level Sensor B Circuit Range/Performance

Possible Causes:


Communication link concernDamaged Instrument Panel Cluster (IPC) (MKS)Damaged Instrument Cluster (IC)Damaged PCM


Trouble Code: P2067

Fuel Level Sensor B Circuit Low

Possible Causes:


Communication link concernDamaged Instrument Panel Cluster (IPC) (MKS)Damaged Instrument Cluster (IC)Damaged PCM


Trouble Code: P2068

Fuel Level Sensor B Circuit High

Possible Causes:


Communication link concernDamaged Instrument Panel Cluster (IPC) (MKS)Damaged Instrument Cluster (IC)Damaged PCM


Trouble Code: P2070

Intake Manifold Tuning Valve (IMTV) Stuck Open (Bank 1)

Possible Causes:


IMTV signal circuit shorted to PWR GND or SIG RTNDamaged IMRC actuatorPCM has failed


Trouble Code: P2071

Intake Manifold Tuning Valve (IMTV) Stuck Closed Bank 1

Possible Causes:


IMTV signal circuit shorted to PWR GND or SIG RTNDamaged IMRC actuatorIMTV circuit openPCM has failed


Trouble Code: P2072

Throttle Actuator Control (TAC) System (Ice Breakage)

Possible Causes:


Ice or oil in the intake air system could be the result of a Positive Crankcase Ventilation (PCV) system concern


Trouble Code: P2096

Post Catalyst Fuel Trim System Too Lean (Bank 1)

Possible Causes:


Loose connection, and damaged or corroded terminalsExhaust leaksContaminated HO2S


Trouble Code: P2097

Post Catalyst Fuel Trim System Too Rich (Bank 1)

Possible Causes:


Loose connection, and damaged or corroded terminalsExhaust leaksContaminated HO2S


Trouble Code: P2098

Post Catalyst Fuel Trim System Too Lean (Bank 2)

Possible Causes:


Loose connection, and damaged or corroded terminalsExhaust leaksContaminated HO2S


Trouble Code: P2099

Post Catalyst Fuel Trim System Too Rich (Bank 2)

Possible Causes:


Loose connection, and damaged or corroded terminalsExhaust leaksContaminated HO2S


Trouble Code: P2100

Throttle Actuator Control (TAC) Motor Circuit/Open

Possible Causes:


TAC motor has an open windingTAC motor is damagedTAC motor harness is openTAC motor harness is short to PWRTAC motor harness circuits are short togetherTAC motor harness connector is unplugged


Trouble Code: P2101

Throttle Actuator Control (TAC) Motor Range/Performance

Possible Causes:


TAC motor circuits are cross-wired


Trouble Code: P2104

Throttle Actuator Control (TAC) System (Forced Idle)

Possible Causes:


Air cleaner and air inlet are not correctly seatedCheck for self-test DTCs in all of the vehicle modules.Accelerator Pedal Position (APP) sensorThrottle Position (TP) sensorManifold Absolute Pressure (MAP) sensorPCM has failed


Trouble Code: P2105

Throttle Actuator Control (TAC) System (Forced Engine Shutdown)

Possible Causes:


Air cleaner and air inlet are not correctly seated.Check for self-test DTCs in all of the vehicle modules.Accelerator Pedal Position (APP) sensor.Throttle Position (TP) sensor.Manifold Absolute Pressure (MAP) sensor.PCM has failed.


Trouble Code: P2107

Throttle Actuator Control (TAC) Module Processor

Possible Causes:


TAC motor harness circuit short to ground.TAC motor harness circuit short to voltage.Damaged Electronic Throttle Body (ETB).PCM has failed.


Trouble Code: P2110

Throttle Actuator Control (TAC) System (Forced Limited RPM)

Possible Causes:


Air cleaner and air inlet are not correctly seated.Check for self-test DTCs in all of the vehicle modules.Accelerator Pedal Position (APP) sensor.Throttle Position (TP) sensor.Manifold Absolute Pressure (MAP) sensor.PCM has failed.


Trouble Code: P2111

Throttle Actuator Control (TAC) System (Stuck Open)

Possible Causes:


Binding throttle body, stuck open.TAC motor circuit open.TAC motor circuits are cross-wired.TAC motor harness circuits are shorted together.PCM has failed.


Trouble Code: P2112

Throttle Actuator Control (TAC) System - Stuck Closed

Possible Causes:


Binding throttle body, stuck open.TAC motor circuit open.TAC motor circuits are cross-wired.TAC motor harness circuits are shorted together.PCM has failed.

Oct 26, 2012 | 2006 Ford Mustang

1 Answer

Engine won't start and shows trouble code P1516 and reduced engine power light is on


Here is the definition of the code.

Possible causes - Faulty Throttle Actuator Control (TAC) module
- Throttle Actuator Control (TAC) module harness is open or shorted
- Throttle Actuator Control (TAC) module circuit poor electrical connection (loose or broken wires)

P1516 CHEVROLET Description The Throttle Actuator Control (TAC) module contains data which is essential for proper TAC operation. The TAC module continuously test the integrity of this data. When the TAC module is unable to write or read data to and from Random Access Memory (RAM), or the TAC module is unable to correctly read data from the flash memory or and internal TAC module processor fault is detected and the Detected Trouble Code (DTC) is set.
Read more: http://engine-codes.com/p1516_chevrolet.html#ixzz286Gl3cSo

Sep 28, 2012 | 2002 Chevrolet TrailBlazer

3 Answers

What doe the code u0107 mean?


U0107,code for this is Throttle actuator control (TAC) module serial data circuit, when you get this code the first action is measure battery voltage,if its low it comes on,Did you replace the PCM or did a reflash,these action will cause this code.To find and fix this you will need to measure app1 and app2 ,you basically looking for a open or short in the serial data circuit

Mar 15, 2012 | 2006 Pontiac Grand Prix

1 Answer

I own a 2006 pontiac grand prix 3.8l series 3 and while im driving my car just shuts down just the motor i got power inside my windows and radio and all and the car says starting disabled due to throttle...


P0606
Control Module Internal Performance

P0601
Control Module Read Only Memory (ROM)
ECM, PCM
U0107
Throttle Actuator Control (TAC) Module Serial Data Circuit
ECM, PCM

The throttle actuator control (TAC) module and the powertrain control module (PCM) communicate using a dedicated serial data circuit. This serial data circuit is separate from any other serial data circuit on the vehicle. Accurate transmitting and receiving of serial data requires not only good circuit integrity but also adequate system voltage. This diagnostic monitors the accuracy of the serial data transmitted between the TAC module and the PCM. If the PCM detects a loss of data or invalid data, or if the throttle limit is exceeded while operating in the Reduced Engine Power mode, DTC U0107 sets.

Your best bet is going to be to take your vehicle to a GM dealer ! Cadillac , Buick

Apr 05, 2017 | 2006 Pontiac Grand Prix

1 Answer

2009 Ford Fusion codes 2107,2110 car slows to 30mph and will no longer accelerate


Well, those codes definately are related to why your vehicle will no longer accelerate!

P2107 is "Throttle Actuator Control (TAC) Module Processor"
This code means that the TAC portion of the Powertrain Control Module (PCM) has failed the self-test.

Posiible causes:
> TAC motor circuit harness shorted to ground
> TAC motor circuit harness shorted to voltage
> Damage Electronic Throttle Body (ETB)
> Damaged PCM

P2110 is "Throttle Actuator Control (TAC) Forced Limited RPM"

This code is informational only. It sets in conjunction with other throttle actuator control codes (like P2107 above). It is just letting you know that the PCM is limiting RPM due to a TAC malfunction, (So it doesn't do a "TOYOTA" on you and run away!"

Jul 06, 2011 | Ford Fusion Cars & Trucks

1 Answer

Have a code on my 2007 ford fusion sel code p2111 TAC do you know what that is and what do i do to fix it. it would dont accellerate until i turned the motor off and turned back on. now it is ok still have...


P2111 PCM indicates the throttle plate is at a greater angle then commanded.

Possible causes:
- Binding in the Throttle Body, Stuck open,
- TAC Motor circuit are cross wired
- TAC Motor harness circuits are shorted together
- Damaged PCM unit.

Hope help with this.

Apr 19, 2010 | 2007 Ford Fusion I4 SEL Sedan

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