Question about Volkswagen Cabrio
Trying to diagnose DTC po121 only get throttle position sensor pedal interupt on scanner
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Posted on Jan 02, 2017
SOURCE: DTC - PO340, PO325
My Nissan micro 2004 model just stopped in the middle of the road one day then the engine management light came on, anyway took it to my local garage TWK Thomas who said it was a cam shaft sensor problem. OK so sensor was put on, engine management light went off for two days only. So went back to the garage they said that another sensor should be fitted on the opposite side. And then the problem should be rectified, but i had given the £160 for this problem to be fixed the first time. I decided it was time to take it to another garage Nis Tec they put it on the computer and a code po340 came up would this mean another sensor or the cam chain has stretched please help. ...claire
Posted on Jul 22, 2009
there is no adjustment on these tps's it's a drive by wire system. If you don't know the vehicle, dont post!
there's 2 sensors contained in the pedal sensor, and one on the throttle plate shaft, more often than not, it's the pedal sensor, and if you replaced that, it's the other one or a loose connection. did you reset the computer after replacing the pedal?
Posted on Feb 09, 2010
i have a f350 ps and it starts and idles but i have no throttle nothing happens when i push the pedal and the check engine light comes on
Posted on Sep 30, 2010
SOURCE: I have a 2007 Chevy
If it is a code P0226 I would not consider it a safety issue. Throttle position (TP) sensor C/accelerator pedal position (APP) sensor ? - range/performance problem Possible Causes: Accelerator cable adjustment, TP/APP sensor Throttle position (TP) switch C/accelerator pedal position (APP) switch ? - range/performance problem Fig. APP sensor mounting
Accelerator cable adjustment, TP/APP switch
This might only be an adjustment issue--make sure the throttle cable isn't so tight that the throttle cannot fully close.
If the cable is OK, it is probably the accelerator position sensor under the pedal.
There are procedures for testing the unit that I will paste below if you care to try them.
If you just want a shop to fix it, the part is about $50 and labor should only be 30 minutes.
Operation The sensor is made up of the two individual sensors within a single housing. Each sensor has a unique functionality to determine pedal position. The APP system along with the Powertrain Control Module (PCM) is used to calculate and control the amount of acceleration and deceleration through fuel injector control.
Removal & Installation
Throttle position (TP) sensor C/accelerator pedal
position (APP) sensor ? - range/performance problem
Possible Causes: Accelerator cable adjustment, TP/APP sensor
Throttle position (TP) switch C/accelerator pedal position
(APP) switch ? - range/performance problem
Fig. APP sensor mounting
Posted on Oct 06, 2010
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Diagnostic Trouble Code (DTC) P1120 indicates that the Throttle Position Sensor (TPS) closed throttle position is below the range of 3.4 percent (0.17 volts). Possible causes for this DTC are:
· Damaged wiring harness or connectors
· Open or shorted Reference Voltage (VREF) circuit
· Faulty TPS
· Faulty Powertrain Control Module (PCM)
The methods/steps for diagnosing this code depend on how the code was stored and retrieved.
This code can be a Key On Engine Off (KOEO), Key On Engine Running (KOER), or a Continuous Memory code. To properly diagnose the cause of the problem a scanner must be obtained that has the ability to read each of these as well as the capability of reading live engine data from the PCM.
Direct voltage readings should be taken at the TPS connector and compared to the live data at the PCM. This will eliminate the possibility of a faulty PCM. The VREF and Signal Return circuits must be verified between the TPS and the PCM. Also the Sensor Ground circuit must be verified between the TPS connector and battery ground.
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