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. It's like when your game controller isn't working right, and your character doesn't move as expected.
The P1122 code is triggered when the Engine Control Module (ECM) detects a low voltage signal from the Pedal Position Sensor 1 circuit.
The Pedal Position Sensor (PPS) is responsible for sending the position of the accelerator pedal to the ECM. The ECM uses this information to control the throttle and engine speed. A 'circuit low' condition indicates that the voltage signal from the sensor is below the expected range, which can affect vehicle performance.
• Reduced engine performance
• Unresponsive accelerator pedal
• Check Engine Light illuminated
• Faulty Pedal Position Sensor
• Wiring issues or poor connections in the sensor circuit
• Faulty ECM
ECM: Engine Control Module
PPS: Pedal Position Sensor
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the Pedal Position Sensor with a multimeter for proper voltage output.
• Replace the 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 - $400
Moderate
• Nissan Altima
• Toyota Camry
• Honda Accord
• Regularly inspect and maintain the vehicle's wiring and connectors.
• Ensure the throttle body is clean and free of debris.
• Schedule regular vehicle diagnostics.
Sensor Issue
• Avoid sudden acceleration until the issue is resolved.
• Have the vehicle inspected by a professional mechanic.
Check if the vehicle's warranty covers sensor-related repairs.
This code has been commonly associated with throttle control issues in various vehicle models.
Moderate – It is recommended to address this issue soon to avoid potential drivability problems.
Driving with this code may lead to reduced vehicle performance and should be addressed to ensure safety.
• Engine running
• Vehicle stationary
The Pedal Position Sensor is typically located near the accelerator pedal assembly.
Q: Can I drive with a P1122 code?
A: It's possible to drive, but it's not recommended as it can lead to reduced performance and safety issues.
Q: How do I reset the P1122 code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.
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.