N16 P2138 CODE (CAR IS BROKEN DOWN AND NEED ADVICE)

2005 Nissan Pulsar

Tiny

brads4.8lpatrol

November, 23, 2010 AT 12:05 PM

I own a 2005 N16 Nissan Pulsar 5 Speed manual
The vehicle broke down last week on the side of the road
I had an Auto electrician come out and he put the Diagnostic scan gauge on the Car and it came up with the code P2138 Throttle Pedal Position Sensor Mismatch between 1 and 2 sensors

I drove out to where the car is broken down today with a brand new TPS and removed the Accelerator Pedal and replaced with a Brand new unit but it did not rectify the issue

The car starts and idles fine but has no revs at all and Engine light stays on

Can anyone help with any advice at all Please as it has been broken down for a week now

Regards

Brad

4 Answers

Tiny

BMRFIXIT

November, 23, 2010 AT 12:20 PM

The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the 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.

Tiny

brads4.8lpatrol

November, 23, 2010 AT 12:32 PM

Thankyou very much for that Information. Very Informative
So if I have replaced the TPS on the Pedal with a brand new one but the problem still exists any ideas what I am missing?

The Car is manual and I had Cruise Control through Nissan fitted at time of purchase which has now been disconnected due to this problem and Noticed the Cruise Control was connected to the Wiring off the TPS

Tiny

BMRFIXIT

November, 23, 2010 AT 12:37 PM

Check the wiring harness
follow the diagram I sent
did you reset the PCM codes?

Tiny

brads4.8lpatrol

November, 23, 2010 AT 12:42 PM

I checked the Harness and the wiring and it looked fine
I have not had the code P2138 cleared or reset as yet

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