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Code P3193

Symptoms

• Check Engine Light is on

• Poor engine performance

• Reduced fuel efficiency

Common Causes

• Faulty throttle actuator control motor

• Wiring issues such as short circuits or poor connections

• Defective ECM

Glossary

Throttle Actuator: A device that controls the throttle plate in the engine.

ECM: Engine Control Module, the computer that manages engine functions.

Related Codes

• P2100

• P2101

Official description

Throttle Actuator Control Motor Circuit High (Bank 2)

Laymans terms

This code means there's a problem with the part of the car that controls how much air goes into the engine. It's like when your remote-controlled car doesn't respond well because the battery is too strong or there's a wiring issue.

Explanation

The throttle actuator control motor is responsible for controlling the throttle plate, which regulates the amount of air entering the engine. A 'circuit high' condition indicates that the voltage in the circuit is higher than expected.

Technical description

The P3193 code is triggered when the Engine Control Module (ECM) detects an unusually high voltage in the throttle actuator control motor circuit for Bank 2. This could be due to a short circuit, faulty wiring, or a malfunctioning throttle actuator motor.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors related to the throttle actuator control motor.

• Test the throttle actuator motor for proper operation.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the throttle actuator control motor if faulty.

• Reprogram or replace the ECM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Screwdriver set

Estimated repair cost

$200 - $800

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Lexus RX350

• Nissan Altima

Preventive measures

• Regularly inspect and maintain the throttle system.

• Ensure electrical connections are secure.

• Use quality parts for replacements.

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the Check Engine Light.

• Seek professional diagnostic assistance if unsure.

• Regular maintenance can prevent such issues.

Warranty information

Check with your vehicle manufacturer for warranty coverage on throttle system components.

Historical data

This code has been associated with throttle control issues in vehicles with electronic throttle control systems, particularly in models from the early 2000s onward.

Urgency level

Moderate – While the vehicle may still be drivable, performance issues should be addressed to prevent further damage.

Legal and safety notice

Ignoring this issue can lead to reduced vehicle performance and increased emissions, which may not comply with legal standards.

Testing conditions

• Vehicle at operating temperature

• Engine running

Component location

The throttle actuator control motor is located on the throttle body, typically near the intake manifold.

FAQs

Q: Can I drive with a P3193 code?
A: While the car may still be drivable, it's not recommended to ignore this issue as it can lead to performance problems and increased emissions.

Q: Will a P3193 code affect fuel economy?
A: Yes, a malfunctioning throttle actuator can lead to poor fuel efficiency.

Last updated: Mar 2, 2026 • Source: internal database
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