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

P2159 OBD-II Trouble Code: Vehicle Speed Sensor B Range/Performance
Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance Related Trouble Codes: P2158: Vehicle Speed Sensor B P2160: Vehicle Speed Sensor B Circuit Low P2161:...
Auto Safety Tips
Driving is more than a way to get from point A to point B. Owning and driving a car can also be a highly enjoyable experience. Whether a person is driving...
P0608 OBD-II Trouble Code: Control Module VSS Output "A" Malfunction
P0608 means there is an malfunction in the vehicle speed sensor A control module often due too faulty speed sensor or shorted electrical wiring.


Related questions

Q: Car in limp mode, check engine light on

In this case you should have an experienced technician look at the vehicle. Limp mode is usually a term used for a vehicle with an automatic transmission which stays in second gear when certain faults arises. A certified technician, like...

Q: My VSA light keeps coming on. And my brake Padal feels weird when you know the light is going to come. Is this something major ?

Hi there. It is possible that this is something that you should be concerned with. It can be low brake fluid or it may be a wheel speed sensor problem. If you have different tires then this will also occur....

Q: Jeep stopped acclerating, brakes locked up, power steering fluid everywhere 2000 Jeep Grand Cherokee

Hi - first task is to check for problem codes (Check Engine light) - these will be helpful. From your symptoms, and the sequence, I believe the engine lost oil suddenly (failed oil cooler line or front crank seal?), and...