Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that the car's computer is having trouble reading the position of the gas pedal on one side of the engine. It's like when your game controller isn't working right, and the game can't tell if you're pressing a button.
The P168B code indicates a problem with the throttle position sensor circuit for Bank 2, where the voltage is lower than expected.
The throttle position sensor (TPS) provides feedback to the engine control module (ECM) about the position of the throttle. When the ECM detects a low voltage signal from the TPS on Bank 2, it triggers the P168B code. Bank 2 refers to the side of the engine with the second cylinder in a V-type engine.
• Check engine light is on
• Poor engine performance
• Hesitation or stalling
• Faulty throttle position sensor
• Wiring issues such as shorts or open circuits
• Faulty ECM
Throttle Position Sensor: A sensor that monitors the position of the throttle in an internal combustion engine.
ECM: Engine Control Module, the computer that manages engine performance.
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for damage
• Test the throttle position sensor with a multimeter
• Replace the throttle position sensor
• Repair or replace damaged wiring
• Reprogram or replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $400
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain wiring and connectors
• Ensure throttle body is clean
• Perform regular diagnostic checks
Sensor Issue
• Avoid driving at high speeds until repaired
• Consult a professional mechanic for accurate diagnosis
Check if your vehicle's powertrain warranty covers sensor issues.
This code has been associated with throttle position sensor issues in vehicles manufactured since the late 1990s.
Moderate – The vehicle may still be drivable, but performance issues can worsen over time.
Driving with a malfunctioning throttle position sensor can lead to decreased performance and may affect vehicle safety.
• Engine at operating temperature
• Vehicle in park or neutral
The throttle position sensor is located on the throttle body, which is typically on the intake manifold.
Q: Can I drive with a P168B code?
A: You can drive with this code, but it's not recommended as it can lead to poor performance and potential safety issues.
Q: How do I clear a P168B code?
A: After repairs, you can clear the code with an OBD-II scanner. If the issue persists, the code will return.
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