Skip the auto shop - Our mechanics make house calls

Q: Code P2135-Error codes read - Throttle position sensor circuit range/performance. Is this something a regular mechanic can report

asked by on

Like solution is: Replace Throttle Body Assembly -

My car has 169000 miles.
My car has an automatic transmission.

Hi there. The P2135 is one of most misdiagnosed trouble codes for mechanics. This particular trouble code indicates that the Power Control Module (PCM) has detected an erroneous reading regarding the voltages transmitted by throttle position sensor A or B, the accelerator pedal position sensor and or the actual throttle plate. The PCM expects both throttle position sensor outputs to stay within a logical and fairly close range of one another. The PCM will regularly compare the sensor readings as a way to test their efficiency and punctuality. Each throttle position sensor will send the PCM a voltage signal in correlation to the position of the throttle plate. The PCM interprets this signal as how far the throttle plate is open. If one throttle position sensor is reading at half throttle and the other is reading at full throttle, the PCM will set a code P2135 because the voltage readings will be so remote that it is impossible for the data to be accurate. In many cases, the culprit is a malfunctioning PCM, throttle position sensors or faulty wiring to the sensors. It’s always best to have a professional mobile mechanic come to your location to inspect your vehicle onsite before recommending the right repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  • Home
  • Questions
  • Code P2135-Error codes read - Throttle position sensor circuit range/performance. Is this something a regular mechanic can report

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

Get a quote

What others are asking

Q: I need to know what's the rattling noise the engine makes when I turn on the car

I would have to hear the noise to know exactly what the noise is since I have seen a serpentine belt tensioner make a knocking noise on these engines and it is an inexpensive repair to just replace the tensioner...

Q: ABS light is on.

Your truck is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car's ECU. When the ECU...

Q: My service engine soon light is on. I hear like a rattling noise when engine is running sometimes. The power doesn't feel the same

If you are referring to the check engine light on your vehicle occasionally the cause of it illuminating is the gas cap is loose. If the rubber seal on the gas cap is intact and the cap is tight, all...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...