Q: APP sensor was replaced but the problem still exists.

asked by on February 01, 2017

Hi Ben, my nissan sunny ex saloon n16 doesn't gas when I step on the acceleration pedal. I just replaced the APP sensor but the problem persists. Here are the codes from the diagnostic test P2122 APP sensor 1 circuit and P2127 APP sensor 2 circuit. Switch D/E low circuit.

My car has 149312 miles.
My car has an automatic transmission.

Electric Problems Inspection $79.99 - $89.99 Get a Quote

Hi there. The throttle position sensor could be defective or the harness to the sensor could have a break in it. Check the harness for any loose or broke wires near the plug. If the harness is good and has no breaks in it, then you will need to remove the harness and the harness from the computer (ECM) and check for continuity to see if the wires are broken. If the wires are broken, then the main engine harness will need to be repaired or replaced. If there is no break and the sensor is working, then the ECM will need replaced. If you need further assistance with your TPS sensor issue, then seek out a professional, such as one from Your Mechanic, to help you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

What types of lockout protection are offered?

Locking up your car is vital for security, but what if you lock your keys in the car? We’ve all done it (or come very close). Thankfully, your car offers some important forms of lockout protection to help ensure you...

2 Major jerks felt today while accelerating from stop.

Hi there. There could be an issue with the throttle position sensor (TPS) or a sticky throttle plate. First check to see if the throttle plate is sticking. If the plate is working properly, then check the TPS for any...

Why does My car shakes or roughly vibrates only in idle & reverse ?

This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the motor (i.e. putting it in gear, making turns (which makes use of the power steering pressure switch) turning on...

Commercial vehicle died while running. no power to panel and no clicking. replaced battery with no changes.

The procedures to diagnose a vehicle that is a no crank or no power condition would always start with the battery being tested. Make sure the battery is fully charged. Next, check each and every fuse in the fuse panel...

Car shifts late and seems to get no fuel at times. Is my transmission bad?

Hi there. Does not sound like the transmission, but more of a fuel pump issue. Check the fuel pressure on the engine to see if you are getting 35 psi or more. If the fuel pressure is less than 35...

When I put my car in gear it doesn't move it Just idles up but wont move is it my clutch or transmission thats out? Standard shift

You want to make sure that the gear linkage is actually connected and functioning. Perhaps it is not really in gear but rather is stuck in neutral. If the linkage is functioning, the next thing to evaluate would be the...

Wiring harness burned up from short circuit to disa valve

Wow! Very disturbing issues to experience, especially the electrical smoke with your family in the vehicle. Based on what you've told me about you 2998 BMW 740i, this is not going to be a quick one to diagnose and repair....

Change check transmission fluid

Hello there. The Nissan Versa and many newer vehicles do not come equipped with transmission dipsticks. The owner's manual (which comes with the car) should have details for how the CVT transmission fluid is checked, as this is a service...

Nissan squeaks a lot on bumpy roads

Usually when you hear squeaks over bumps this is related to a tie rod or a ball joint that has been dried out. If your tie rods and ball joints are serviceable, they will have grease fittings on them in...

Related articles

How Are Car Sensors Protected From Heat and Debris?
Reliable car performance depends on sensors to collect and relay data. Some car sensors can be cleaned to make them work reliably again.
A Buyer’s Guide to the 2012 Nissan LEAF
The The introduction of the LEAF represented the beginning of an age many car experts were skeptical would even happen – true mass production of a 100% electric vehicle. Not only did it happen but the LEAF was grabbed up...
How Are Car Sensors Protected From Heat and Debris?
Reliable car performance depends on sensors to collect and relay data. Some car sensors can be cleaned to make them work reliably again.