Error Code P0226: What It Means & What To Do?

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The P0226 fault code can be defined as throttle/pedal position sensor/switch C circuit range/performance problem. It is a generic OBD-II code which would indicate that the throttle/pedal position sensor/switch C circuit has a range or performance which is causing the sensor input to the ECM to not be the same as the expected voltage input as compared to the redundant throttle position A.

Do you want to learn something more about this fault code? The electronic throttle control actuator comprises of throttle control motor, throttle position sensors etc. The throttle position sensor would respond to the throttle valve movement. There are two sensors in the throttle position sensor. These sensors are a type of potentiometers which can transform the throttle valve position into the output voltage and would start emitting the voltage signal to the engine control module. These sensors also help in detecting the opening as well as closing speed of the throttle valve and would feed the voltage signals to the engine control module. The engine control module would judge the current opening angle of the throttle valve from these signals and the engine control module would control the throttle control motor to make the throttle valve opening angle properly in response to the driving condition.

What causes this problem with the Throttle/Pedal Position Sensor/Switch C Circuit?

• Damaged, short circuited, or corroded wiring and connectors
• The TPS or pedal sensors might be faulty
• Mal-adjusted TPS sensors
• Issue of mechanical wear in the TPS sensor and/or throttle body
• Carbon deposits in the throttle body that impede the movement of the throttle plate
• There can be some failures in the powertrain control module

1. Pedal Sensors - The P0226 code can also arise due to some issues in the Pedal Sensors. So, it is advised to replace them as soon as possible.
2. Throttle Position Sensor - Do you remember when was the last time you got your car Throttle Position Sensor checked up? A damaged Throttle Position Sensor can cause a lot of issues like displaying P0226 code.
3. Powertrain Control Module - Powertrain Control Module is an important car part which should never be neglected. May be there is some fault in it due to which P0226 code may start flashing.
4. Engine Wiring Connector - Is your Engine Wiring Connector damaged or broken? Don’t worry as we have solutions for all your problems.

Willing to know some common symptoms of OBD Trouble Code P0226? Your wish is our demand. Have a look at them below:

Common Symptoms

• 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

Here are some ways with the help of which you will be able to correct the OBD Code P0226

• Repairing or replacing defective connectors or wiring to the sensor if they are corroded, or have connector damage
• The cuts or shorts in the wiring to the sensor should be properly repaired
• If there are some defects in the throttle body control assembly, then it should be replaced
• The faulty engine control module should be replaced or reprogrammed
• The battery should be disconnected. Any access or trim panels are removed for access to the module
• The engine control module connections should be disconnected and the module should be removed. Install and secure the new module. The electrical connections should then be connected
• Reconnect the battery as well as charger to maintain battery charge if needed. Any removed access or trim panels should be reinstalled
• The engine control module is programmed to work with the vehicle for operation with an approved scan tool or methods
• Carefully disconnect the charger and take your vehicle outside for a road test for proper operation

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Here are some steps which you should follow in order to diagnose this fault code:

• The first and foremost thing which you should do is to scan the codes and document the freeze frame data
• Then you must clear the codes to check whether the concern comes back
• Visually check of the wiring and connections to the throttle body sensor
• Disconnect connection to the sensor and check for corrosion, or problems with pin engagement
• Carefully test for proper battery voltage to the sensor
• The battery and charging system for proper operation should then be checked
• Test the sensor resistance and compare it to specifications

Common Mistakes When Diagnosing The P0226 Code

• You can always visually inspect for connections to the sensor to make sure they are making good contact to the throttle control assembly
• Make sure the battery and charging system are in good working conditions
• Search for any problems with burnt or cut wiring to the sensor, or corrosion in the connections