Skip the auto shop - Our mechanics make house calls

P0226 OBD-II Trouble Code: Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance Problem

Check Engine Light

P0226 code definition

Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance Problem

What the P0226 code means

P0226 is a generic OBD-II code which indicates that the throttle/pedal position sensor/switch C circuit has a range or performance problem causing the sensor input to the engine control module (ECM) to not be the same as the expected voltage input compared to the redundant throttle position A.

What causes the P0226 code?

  • The ECM detects sensor circuit voltage that is outside of the specified range designed for the sensor over a specified amount of time

  • Short to the supply voltage in the signal cable

  • Short to ground in the signal cable

  • Open circuit in the signal cable

What are the symptoms of the P0226 code?

  • The sensor is ignored during braking and the throttle is shut completely during stops

  • The throttle sets to a fixed position during failure

  • Low idle position resulting in uneven idle or jerking during braking

  • Very poor throttle response, or no response at all, during acceleration

  • Disabled cruise control

  • Vehicle speed limited to approximately 32 mph or less

  • Check Engine Light and Electronic Throttle Control (ETC) Light illumination

How does a mechanic diagnose the P0226 code?

  • Scans codes and documents the freeze frame data

  • Clears the engine and ETC codes to verify whether the concern comes back

  • Does a visual check of the wiring and connections to the throttle body sensors to see if they are secure

  • Disconnects connection to the sensors and checks for corrosion, or problems with pin engagement

  • Checks scan data to see if sensor voltage is open or shorted, and follows pinpoint testing steps to find short or open circuit

  • Tests the sensor resistance and compares it to specifications

Common mistakes when diagnosing the P0226 code

Follow these simple guidelines to prevent misdiagnosis

  • Do a visual check of connections to the sensor to make sure they are making good contact to the throttle control assembly

  • Make sure the battery and charging system is working properly

  • Look for any problems with burnt or cut wiring to the sensor, or corrosion in the connections

How serious is the P0226 code?

  • The engine will go into limp home mode and systems will be limited
  • The vehicle speed will be limited to less than 35 mph
  • The engine may hesitate or lack acceleration
  • The engine idle will be low and erratic, or may be fixed to a set RPM

What repairs can fix the P0226 code?

  • Repairing or replacing defective connectors or wiring to the sensor if they are corroded, or have connector damage

  • Repairing cuts or shorts in the wiring to the sensor

  • Replacing the throttle body control assembly, if defective

  • Replacing or reprogramming the ECM

Additional comments for consideration regarding the P0226 code

The code P0226 is for one of the multiple sensors for the throttle body control. Some vehicles use the sensor to compare voltage output with the redundant sensors to prevent throttle control issues. This code may have various drive symptoms, depending on the manufacturer's failure limp home mode.

Need help with a P0226 code?

YourMechanic offers certified mobile 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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
Veteran and Military Driver Laws and Benefits in New Mexico
The state of New Mexico offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch...
P0291OBD-II Trouble Code: Cylinder 11 Injector Circuit Low
P0291 code definition When your vehicle’s PCM registers the P0291 code, it means that a voltage reading came from the fuel injector circuit – for cylinder number 11’s fuel injector –...


Related questions

Q: Acceleration problems, car shaking and check engine light on

Hi there. There are a few different things that can cause this. It can be the fact that the speedometer is not working due to a bad transmission speed sensor. This can cause the computer to not know when to...

Q: I am getting the P200A check engine light

The trouble code that you have listed is associated with a known problem for the intake manifold runner control system. There are some 2011 and 2012 model year vehicles that have a current recall to have the control module reprogrammed...

Q: EGR BPT valve & EGR solenoid valve need replacements

Hello there. When codes go away like this, it generally means that the fault has resolved itself or the Check Engine Light has failed in the cluster. If the code is gone this would indicate that there is not a...