Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
The car's computer is having trouble reading how much you're pressing the gas pedal on one side of the engine.
This code indicates that the voltage signal from the throttle or pedal position sensor/switch 'B' on bank 2 is lower than expected.
The P1228 code is triggered when the Engine Control Module (ECM) detects a low voltage condition in the throttle or pedal position sensor/switch 'B' circuit on bank 2. This could indicate a problem with the sensor, wiring, or connectors.
• Check Engine Light is on
• Reduced engine performance
• Unresponsive throttle
• Faulty throttle/pedal position sensor
• Poor electrical connection
• Damaged wiring harness
Throttle: The mechanism by which fluid flow is managed by constriction or obstruction.
Sensor: A device that detects or measures a physical property and records, indicates, or otherwise responds to it.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the throttle/pedal position sensor with a multimeter.
• Repair or replace damaged wiring or connectors.
• Replace the throttle/pedal position sensor.
• Clear the code and test drive the vehicle.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $300
Moderate
• Toyota Camry
• Ford F-150
• Chevrolet Silverado
• Regularly inspect and maintain the throttle system.
• Keep electrical connections clean and secure.
• Use high-quality replacement parts.
Sensor Issue
• Avoid driving aggressively until the issue is fixed.
• Have a professional diagnose and repair the issue.
Check if the vehicle's warranty covers sensor and wiring repairs.
This code has been reported in vehicles with high mileage or those that have experienced previous electrical issues.
Moderate – It is recommended to address this issue soon to avoid potential drivability problems.
Driving with this code may lead to reduced engine performance and should be addressed to ensure vehicle safety.
• Engine running
• Vehicle in park or neutral
The throttle/pedal position sensor is typically located on the throttle body or near the accelerator pedal.
Q: Can I drive with a P1228 code?
A: It's possible, but not recommended as it may cause reduced performance and could lead to further issues.
Q: How do I clear a P1228 code?
A: After repairs, use an OBD-II scanner to clear the code, then test drive to ensure it doesn't return.
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