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 getting a signal that the gas pedal is being pressed too hard, but it might not be true. It's like when a video game controller sends the wrong signal to the game.
The engine control module (ECM) is detecting a higher than expected voltage from the throttle or pedal position sensor on bank 2.
The P1225 code indicates that the ECM has detected a high voltage signal from the throttle or pedal position sensor/switch 'A' on bank 2. This could mean that the sensor is faulty, the wiring is damaged, or there is a problem with the ECM itself.
• Check engine light is on
• Poor throttle response
• Reduced engine performance
• Faulty throttle/pedal position sensor
• Damaged wiring or connectors
• Faulty ECM
ECM: Engine Control Module
OBD-II: On-Board Diagnostics II
• Use an OBD-II scanner to confirm the code
• Inspect the wiring and connectors for damage
• Test the throttle/pedal position sensor for proper function
• Replace the throttle/pedal position sensor
• Repair or replace damaged wiring
• Replace the ECM if necessary
• OBD-II scanner
• Multimeter
• Screwdriver set
$150 - $500
Moderate
• Vehicle 1
• Vehicle 2
• Vehicle 3
• Regular maintenance checks
• Inspect wiring for wear and tear
• Ensure sensors are clean and functional
Sensor Issue
• Do not ignore the check engine light
• Get the vehicle inspected by a professional
• Avoid driving aggressively until the issue is resolved
Check with the vehicle manufacturer for specific warranty coverage on sensors and ECM.
This code has been associated with sensor failures in various models, often leading to reduced engine performance.
Moderate – It affects engine performance but doesn't pose an immediate safety risk.
Driving with a malfunctioning throttle sensor can lead to reduced engine performance and should be addressed promptly.
• Engine running
• Throttle sensor connected
The throttle/pedal position sensor is typically located on the throttle body or near the accelerator pedal.
Q: Can I drive with a P1225 code?
A: It's possible to drive, but it may affect engine performance. It's best to fix it soon.
Q: How do I reset the check engine light?
A: After fixing the issue, use an OBD-II scanner to clear the code.
High-End · Full-system diagnostics
A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.
Network faults often require full-system access instead of a generic code reader alone.
View on Amazon
Universal · Digital multimeter
A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.
Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
View on Amazon
Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
View on AmazonThese are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.