P2140 OBD-II Trouble Code: Throttle/Pedal Position Sensor/Switch E / F Voltage Correlation

Our certified mechanics come to you · Get a fair and transparent estimate upfront

Red-stars EXCELLENT RATING ON

Cost of diagnosing the P2140 code

P2140 is a diagnostic trouble code (DTC) for "Throttle/Pedal Position Sensor/Switch E / F Voltage Correlation". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $0.0 . Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.0 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford $0.0 $20.0
Toyota $0.0 $20.0
BMW $0.0 $20.0
SCHEDULE P2140 DIAGNOSTIC Get a fair and transparent estimate upfront

P2140 code definition

Throttle/Pedal Position Sensor/Switch E / F Voltage Correlation

Related Trouble Codes:

  • P2135: Throttle/Pedal Position Sensor/Switch A / B Voltage Correlation
  • P2136: Throttle/Pedal Position Sensor/Switch A / C Voltage Correlation
  • P2137: Throttle/Pedal Position Sensor/Switch B / C Voltage Correlation
  • P2138: Throttle/Pedal Position Sensor/Switch D / E Voltage Correlation
  • P2139: Throttle/Pedal Position Sensor/Switch D / F Voltage Correlation

What the P2140 code means

The P2140 diagnostic trouble code is an indication that a fault is present in a specific throttle position sensor switch. It will only been seen with vehicles that have an electronically controlled throttle body. The accelerator position sensor uses a voltage signal to communicate with the Powertrain Control Module (PCM) as to how much the throttle body needs to open or close. The PCM then sends a voltage signal to the throttle actuator motor, which opens and/or closes the throttle plate. The two throttle position (TP) sensor voltage signals determine whether the throttle plate needs to open quickly, or gradually, and should correlate with each other when they are working properly. If the voltage signals of these two sensors do not correlate, the PCM will store the P2140 trouble code.

What causes the P2140 code?

  • Corrosion in the electronic throttle body connector
  • Electronic throttle body wiring that is broken, frayed, or corroded
  • Faulty electronic throttle body
  • Faulty throttle body position sensor
  • Faulty accelerator pedal position sensor
  • Faulty throttle actuator control motor
  • Faulty throttle position actuator
  • Throttle position sensor that needs to be reprogrammed (this needs to be done by the dealer)

What are the symptoms of the P2140 code?

  • Check Engine Light is on
  • Black smoke from the exhaust
  • No acceleration power
  • Poor acceleration power
  • Complete loss of power
  • Loss of power at highway speeds
  • The engine will not start at all
  • The engine may start and then stall
  • The engine may stall when coming to a stop
  • Throttle (RPM) is stuck

How does a mechanic diagnose the P2140 code?

  • Inspects all wiring and connectors for damage, disconnection, shorts, or corrosion

  • Repairs or replaces any wiring and/or connectors that are damaged, disconnected, shorted or corroded

  • Uses an OBD-II scanner to collect all of the trouble codes and freeze frame data that have been stored by the PCM

  • Clears the codes and completes a test drive to see if the P2140 trouble code comes back (if it does not come back immediately, it could be an indication that an intermittent problem exists; it may need to worsen before the problem can be diagnosed properly)

  • Uses a volt/ohmmeter to check the voltage and ground signals of the throttle position sensor electrical connector (the reference signal should be at 5-volts; voltage specifications are set by the manufacturer)

If the throttle position sensor electrical connector does not give a voltage and/or ground signal:

  • Tests the resistance and continuity of the circuits

  • Repairs circuits that are damaged, or those that have shorts or opens

  • Clears the stored trouble codes and completes a test drive to see if the code comes back

If the code comes back:

  • Views the waveform pattern of the throttle pedal sensor, using an oscilloscope

If the waveform pattern does not slowly increase or decrease:

  • Replaces the throttle pedal sensor

  • Clears the codes and completes a test drive to see if the code comes back (if the code returns, then there is a possibility that the PCM may need to be replaced or reprogrammed)

  • Tests the throttle actuator control motor connector for voltage and ground signals, using a scanner

If the throttle actuator control motor connector does not give a voltage and/or ground signal:

  • Tests the resistance and continuity of the circuits

  • Repairs circuits that are damaged, or those that have shorts or opens

If the throttle actuator motor or throttle body sensor is faulty, the entire throttle body assembly will need to be replaced. This is due to the location of these sensors being inside the throttle body assembly itself. If the throttle body assembly needs to be replaced, it is also recommended that the throttle pedal sensor be replaced as well.

Common mistakes when diagnosing the P2140 code

One common mistake when diagnosing the P2140 trouble code is that misfire codes, fuel injector codes, lean codes, and/or transmission codes are determined to be the issue. It is important to diagnose trouble codes in the order that they appear, if other trouble codes have been stored by the PCM. It is also important to check the wiring and connectors thoroughly before replacing any components.

How serious is the P2140 code?

The P2140 diagnostic trouble code can cause serious drivability issues, such as a loss of power, stalling, and the inability to accelerate when acceleration is necessary. This can prove to be extremely dangerous, and accidents are more likely possible. For these reasons, this trouble code is considered serious and should be diagnosed and repaired as soon as possible.

What repairs can fix the P2140 code?

Additional comments for consideration regarding the P2140 code

The throttle position sensor and throttle actuator sensor are located inside the throttle body assembly. Although these sensors can be diagnosed separately, because of their location, it is not possible to replace them separately. Therefore, if the throttle position sensor and/or throttle actuator sensor is faulty, the entire throttle body assembly will need to be replaced. This is the most common solution to the P2140 diagnostic trouble code.

*Need help with a P2140 code? *

YourMechanic offers certified mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

Check Engine Light
trouble codes
P2140

No more waiting rooms! Our mechanics will come to you to diagnose and fix the P2140 code.

SCHEDULE P2140 DIAGNOSTIC
Get a $20 credit for the follow-up repair

Recent Check Engine Light is on Inspection reviews

Excellent Rating

(6652)

Rating Summary
6165
233
54
36
164
6165
233
54
36
164
 at YourMechanic

William

34 years of experience
387 reviews
William
34 years of experience
Honda Passport V6-3.2L - Check Engine Light is on - Glendale, Arizona
He is a good Macknic and a nice man and also very helpful and trustful person. I am so happy his job..Long live William and his family.
 at YourMechanic

Matthew

33 years of experience
1080 reviews
Matthew
33 years of experience
Honda Accord V6-3.5L - Check Engine Light is on - Newport News, Virginia
Matthew always takes time to explain how (the parts that need repair) they function in the car. He works quickly and is always friendly and prompt. He does great work!
 at YourMechanic

Paul

25 years of experience
237 reviews
Paul
25 years of experience
Mercedes-Benz E350 V6-3.5L - Check Engine Light is on - Las Vegas, Nevada
Paul was very knowledgeable and professional. he explained what it would cost to get my car repaired and I felt very comfortable with his expertise in repairing my car.
 at YourMechanic

Victor

35 years of experience
191 reviews
Victor
35 years of experience
Pontiac Grand Prix - Check Engine Light is on - Albuquerque, New Mexico
Victor showed up earlier than the appointed time so that was great. He did the diagnostic and he listened to what problems I’ve had with my car. Overall, I had more information and a complete diagnostic done without question. I would recommend him for anyone.


More related articles

P2192 OBD-II Trouble Code: System Too Rich at Higher Load Bank 1
P2192 P2192 code definition System Too Rich at Higher Load Bank 1 What the P2192 code means This code indicates there is a rich condition in the exhaust under high load conditions. High load conditions exist when a vehicle is...
C1104 OBD-II Trouble Code: Traction Control Active Lamp - Circuit Short to Battery
Trouble code C1104 means the Engine Control Unit (ECU) has registered a short circuit issue in the traction control lamp.
P2177 OBD-II Trouble Code: System Too Lean Off Idle Bank 1
P2177 code definition P2177 is a general OBD-II diagnostic trouble code indicating a fault with the bank 1 too lean. This code...

Related questions

P0741 OBD code

Hello, thanks for writing in about your Volkswagen Passat. Trouble code P0741 indicates: Torque Converter Clutch Circuit Performance or Stuck Off. If you need help with getting this fixed, consider YourMechanic, as one of our mobile technicians can come to...

My engine is running too lean

Hi there. The high octane gas should not cause this; the new air intake definitely could, though. With more air entering the engine, the computer sensor readings are going to be thrown off. I would recommend that you first make...

My Check Engine Light came on. I fixed the issue, but the light quickly came back on. Will it turn itself off?

Just because a code is displayed does not mean that part is bad in all cases. The code is used as a tool to diagnose the problem. You may have to have the code diagnosed by an experienced mechanic like...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (855) 347-2779 · hi@yourmechanic.com