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 thinks that the gas pedal is being pressed too hard or is stuck, but it might be a mistake because of a sensor issue.
The P1243 code indicates that the throttle or pedal position sensor for bank 2 is reading a voltage that is too high, suggesting a potential problem with the sensor or its circuit.
The P1243 code is triggered when the Engine Control Module (ECM) detects a high voltage condition in the throttle or pedal position sensor 'B' circuit on bank 2. This could be due to a faulty sensor, wiring issues, or a problem with the ECM itself.
• Check Engine Light is on
• Poor throttle response
• Vehicle may enter 'limp' mode
• Faulty throttle/pedal position sensor
• Wiring issues or poor connections
• Faulty Engine Control Module (ECM)
Throttle: A device controlling the flow of fuel or power to an engine.
ECM: Engine Control Module, the computer that controls engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the throttle/pedal position sensor for proper operation.
• Replace the throttle/pedal position sensor if faulty.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the ECM if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Camry
• Regularly inspect and maintain the throttle system.
• Ensure wiring and connectors are in good condition.
• Use quality parts for replacements.
Sensor Issue
• Do not ignore the Check Engine Light.
• Have the vehicle diagnosed by a professional.
• Avoid driving the vehicle if it enters 'limp' mode.
Check with the vehicle manufacturer for warranty coverage on sensors and ECM.
This code has been associated with sensor failures in various models, often due to wear and tear or environmental factors.
Moderate – Addressing this issue promptly can prevent further complications.
Driving with a faulty throttle position sensor can lead to unsafe driving conditions. Address the issue as soon as possible.
• Engine running
• Vehicle stationary
The throttle/pedal position sensor is typically located near the throttle body or on the accelerator pedal assembly.
Q: Can I drive with a P1243 code?
A: It's not recommended to drive for long distances with this code as it can affect vehicle performance and safety.
Q: How do I reset the Check Engine Light after fixing the issue?
A: Use an OBD-II scanner to clear the code after repairs are completed.
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