Engine error code P03000

first off P2 codes are factory codes so googling those gets lies easy. only the shop manual VW is the right way and it even tells you step by step how to prove what is wrong, (tests)
country not told , engine yes, VW yes ,body yes. stick shift yes.
USA answers this web site no COUNTRY stated so must be told.
yes TBW cars the TB and pedal pots all must match or it goes to limphome, like all modern cars do i fact.
from the book (USA)it states clearly this.

Number of Trips to Set Code: 1
Trouble Code Conditions:
Engine started, battery voltage at least 11.5v, all electrical components off, ground connections between engine and chassis well connected, the ECM detected that the accelerator pedal position sensor signal was outside the parameters to function normally. Note: Both the Throttle Position (TP) Sensor and Accelerator Pedal Position Sensor are located at the accelerator pedal module and communicate the driver's intentions to the ECM completely independently of each other. Both sensors are stored in one housing.
Possible Causes:

• * Ground between engine and chassis may be broken
• * Throttle position sensor may have failed
• * Accelerator Pedal Position Sensor has failed
• * Throttle position sensor wiring may have shorted
• * Throttle position sensor has failed
• * Faulty voltage supply
• * ECM has failed <<<<(nah I say)

Trouble Code: P2128 (1.8L L4 VIN - Std)
Accelerator Pedal Position Sensor 'E' Circuit High Input

now learn this on TBW, throttle by wire,
you must do a learn cycle to swap parts for sure not willlyynillyyy
the TB and the pedal modules are married and turned
to like each other, and learm mode step is next. changing many parts, for sure all that guessing and throwing parts are hopeless.
Throttle Valve Control Module J338 Throttle Drive (for Electronic Power Control (EPC)) G186/Throttle Drive Angle Sensor 1 (for throttle drive) G187/Throttle Drive Angle Sensor 2 (for throttle drive). G188 6-pin electrical harness connector 2.
those are the parts.
I see no learn mode.
Final procedures

After the Repair work, the following work steps must be performed in the following sequence:

Check the DTC memory. Refer to Diagnostic Mode 03 - Read DTC Memory.
If necessary, erase the DTC memory. Refer to Diagnostic Mode 04 - Erase DTC Memory.
If the DTC memory was erased, generate readiness code. Refer to Readiness Code.

End of diagnosis.
the tests in them manual are long for both devices TB/pedal

reset All DTC errors at parts swaps and
key off
then pull battery NEG log for 1 or more hours.
then put back and tranny will self learn
and any others, told in the service manual

Next time ask what to do first, on modern cars.
Id have swapped the pedal parts all first.
reset all DTC
and pulled battery neg lug.
and waited, and put back battery and drive so PCM can learn the new PEDAL values, and also the TB (paired to it)
if that is too costly?
the manual shows the tests on each pint here Pedal and voltages and ohms to find the exact cause of the error, if lucky
do learn this, most go intermittence, and super hard to prove that.
best is replace the pedal POTS in whole.
if TB fails it too in whole and never buy used parts here.
cardone1 may have it but great quality rebuilt.

Hi Steve , your vehicle has electronic throttle control . I don't know if you are aware of this. The gas pedal have position sensors an a wiring connector with 4-6 wires .these wires are connected to the engine computer . an there is a electric motor on the throttle body assembly , the computer opens an closes the throttle . You probably have codes stored in the engine computer .
Reduced Engine Power Mode When the PCM detects a condition with the TAC system the PCM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
?€¢
Acceleration limiting--The control module will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.

?€¢
Limited throttle mode--The control module will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.

?€¢
Throttle default mode--The control module will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.

?€¢
Forced idle mode--The control module will perform the following actions:

-
Limit engine speed to idle by positioning throttle position, or by controlling fuel and spark if throttle is turned off.

-
Ignore accelerator pedal input.

?€¢
Engine shutdown mode--The control module will disable fuel and de-energize the throttle actuator.

Drive by Wire Function and diagnostics by Wells

No messaage of reduced engine power ? Your vehicle has electronic throttle control . Has four position sensors , two are located in the gas pedal ,an two in the throttle body . The PCM uses these sensor to know how much to open the throttle plate ,allowing more air into the engine . How did you read this code an where did you read it's definition at ? This is not a code for your vehicle . Some time cheap code readers get them wrong .
DTC P2120: Accelerator Pedal Position (APP) Sensor 1 Circuit
DTC P2122: Accelerator Pedal Position (APP) Sensor 1 Circuit Low Voltage
DTC P2123: Accelerator Pedal Position (APP) Sensor 1 Circuit High Voltage
DTC P2125: Accelerator Pedal Position (APP) Sensor 2 Circuit
DTC P2127: Accelerator Pedal Position (APP) Sensor 2 Circuit Low Voltage
DTC P2128: Accelerator Pedal Position (APP) Sensor 2 Circuit High Voltage
DTC P2138: Accelerator Pedal Position (APP) Sensor 1-2 Correlation

DTC P1516: Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
DTC P2101: Throttle Actuator Position Performance
DTC P2119: Throttle Closed Position Performance
DTC P2176: Minimum Throttle Position Not Learned

If one of this position sensors is bad it will throw the PCM into a
Reduced Engine Power Mode
When the ECM detects a condition with the TAC system, the ECM may enter a reduced engine power mode. Reduced engine power may cause one or more of the following conditions:
• Acceleration limiting--The ECM will continue to use the accelerator pedal for throttle control; however, the vehicle acceleration is limited.
• Limited throttle mode--The ECM will continue to use the accelerator pedal for throttle control; however, the maximum throttle opening is limited.
• Throttle default mode--The ECM will turn off the throttle actuator motor and the throttle will return to the spring loaded default position.
• Forced idle mode--The ECM will perform the following actions:
- Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned off.
- Ignore the accelerator pedal input.
• Engine shutdown mode--The ECM will disable fuel and de-energize the throttle actuator.


017 Accelerator Pedal Position Sensors
Drive by Wire Function and diagnostics by Wells

Here is the definition. You may need to have someone check the accelerator pedal position sensor and the circuit.

P2138 NISSAN Description The Accelerator Pedal Position (APP) sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the Engine Control Module (ECM).
Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which transform the accelerator pedal position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of the accelerator pedal and feed the voltage signals to the ECM. The ECM judges the current opening angle of the accelerator pedal from these signals and controls the throttle control motor based on these signals.
Idle position of the accelerator pedal is determined by the ECM receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine operation
such as fuel cut.
Read more: http://engine-codes.com/p2138_nissan.html#ixzz26J3D2x8s

For Acceleration related problems,

Click the link below to troubleshoot this problem: ---
Car loses power while acceleration? http://schematicsdiagram.blogspot.com/2011/12/car-loses-power-while-acceleration.html

----------
Loss of acceleration?

http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html

-----------
Acceleration lag problem?

http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html

--------------
How exactly the Vehicles Accelerator Cable works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html

-----------

How exactly Vehicles Accelerator Pump Diaphragm Works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html

----------
accelerator pedal sensor?

http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

----------
stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

---------
Engine accelerates when brake is applied?

http://technoanswers.blogspot.in/2012/02/engine-accelerates-when-brake-is.html

-----------

This will help.

Thanks.

Click the link below to troubleshoot this problem :---Car loses power while acceleration? http://schematicsdiagram.blogspot.com/2011/12/car-loses-power-while-acceleration.html
----------Loss of acceleration? http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html
-----------Acceleration lag problem? http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html
--------------How exactly the Vehicles Accelerator Cable works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html

-----------

How exactly Vehicles Accelerator Pump Diaphragm Works? http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html
----------accelerator pedal sensor? http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html
----------stalls and bucks on Acceleration? http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html
---------Engine accelerates when brake is applied? http://technoanswers.blogspot.in/2012/02/engine-accelerates-when-brake-is.html
-----------This will help.Thanks.

Click the link below to troubleshoot this problem: ---
Car loses power while acceleration? http://schematicsdiagram.blogspot.com/2011/12/car-loses-power-while-acceleration.html

----------
Loss of acceleration?

http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html

-----------
Acceleration lag problem?

http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html

--------------
How exactly the Vehicles Accelerator Cable works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html

-----------

How exactly Vehicles Accelerator Pump Diaphragm Works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html

----------
accelerator pedal sensor?

http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

----------
stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

---------
Engine accelerates when brake is applied?

http://technoanswers.blogspot.in/2012/02/engine-accelerates-when-brake-is.html

-----------

This will help.

Thanks.

For acceleration problem, the help links are provided below, click the link below to go through its procedure: ----
Engine accelerates when brake is applied? http://technoanswers.blogspot.in/2012/02/engine-accelerates-when-brake-is.html ---------- Loss of acceleration?

http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html

----------
How exactly the Vehicles Accelerator Cable works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-cable.html

-------
How exactly Vehicles Accelerator Pump Diaphragm Works?

http://repairhelpcenter.blogspot.com/2011/11/how-exactly-vehicles-accelerator-pump.html

------
accelerator pedal sensor?

http://technoanswers.blogspot.in/2012/02/2009-chevy-impala-accelerator-pedal.html

-------
stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

-------
Acceleration lag problem?

http://repairhelpcenter.blogspot.com/2012/01/acceleration-lag-problem.html

-------
Car loses power while acceleration?

http://schematicsdiagram.blogspot.com/2011/12/car-loses-power-while-acceleration.html

---------

This will help.

Thanks.

That trouble code is faulting the accelerator pedal sensor. The APP sensors are located in a TAC module mounted to the accelerator pedal bracket. There are three individual APP sensors within the TAC module. Three separate signal circuits, low reference circuits, and 5v reference circuits are used to determine the accelerator pedal position. The APP sensor signal voltages increase when the accelerator pedal is depressed.