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 computer in the car is having trouble controlling the part that makes the car go faster when you press the gas pedal.
The P1671 code indicates a problem with the performance of the throttle actuator controller in the vehicle's internal control module.
The throttle actuator controller is responsible for managing the throttle position based on the input from the accelerator pedal. When the internal control module detects that the throttle actuator controller is not performing as expected, it triggers the P1671 code.
• Engine hesitation or stalling
• Reduced engine power
• Check Engine Light illuminated
• Faulty throttle actuator
• Wiring issues or poor connections
• Defective internal control module
Throttle Actuator: A device that controls the throttle position in an electronically controlled engine.
Internal Control Module: The computer system within a vehicle that manages engine functions.
• Use an OBD-II scanner to confirm the code.
• Inspect the throttle actuator and related wiring.
• Test the internal control module for faults.
• Replace the faulty throttle actuator.
• Repair or replace damaged wiring or connectors.
• Reprogram or replace the internal control module if necessary.
• OBD-II scanner
• Multimeter
• Screwdriver set
$200 - $800
Moderate
• Chevrolet Silverado
• Ford F-150
• Toyota Camry
• Regular maintenance of the throttle body
• Ensure clean and secure electrical connections
• Update vehicle software as recommended
Engine Performance
• Avoid driving at high speeds until the issue is resolved.
• Consult a professional mechanic for an accurate diagnosis.
Check with the vehicle manufacturer for warranty coverage on the throttle actuator and control module.
The P1671 code has been associated with throttle control issues in various vehicle models, often due to electronic component failures.
Moderate – While the vehicle may still be drivable, it could experience reduced performance and potential safety issues.
Driving with a malfunctioning throttle actuator can lead to unexpected acceleration or deceleration, posing a safety risk.
• Engine at operating temperature
• Vehicle in park or neutral
The throttle actuator is typically located on the intake manifold near the throttle body.
Q: Can I drive with a P1671 code?
A: It's not recommended as it may lead to reduced engine performance and safety concerns.
Q: How do I clear a P1671 code?
A: After repairs, use an OBD-II scanner to clear the code from the vehicle's computer.
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.