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Code P1679

Quick reference

P1679 at a glance

Plain-language meaning
This code means there's a problem with the car's system that controls how much power the engine makes. It's like when a toy car's remote control isn't working right, and the car doesn't go as fast as it should.
Urgency
Moderate – It's important to address this issue to prevent further engine performance problems.
Difficulty
Moderate
System
Engine Performance
Tools mentioned
OBD-II scanner, Multimeter, Throttle body cleaner

This summary uses the existing diagnostic information shown in full below.

Laymans terms

This code means there's a problem with the car's system that controls how much power the engine makes. It's like when a toy car's remote control isn't working right, and the car doesn't go as fast as it should.

Explanation

The P1679 code indicates an issue with the electronic throttle control system, specifically related to the calculation of torque loss at levels 2 or 3.

Technical description

The electronic throttle control (ETC) system monitors the throttle position and adjusts it to ensure optimal engine performance. The P1679 code is triggered when the ETC system detects an anomaly in the torque loss calculation, indicating a potential issue with the throttle control system's ability to accurately manage engine power.

Symptoms

• Reduced engine power

• Check engine light is on

• Poor acceleration

Common Causes

• Faulty throttle position sensor

• Wiring issues in the throttle control circuit

• Malfunctioning electronic throttle body

Glossary

Electronic Throttle Control: A system that electronically controls the throttle valve to regulate engine power.

Torque: A measure of the rotational force produced by the engine.

Diagnosis steps

• Check for other related codes

• Inspect the throttle position sensor and wiring

• Test the electronic throttle body for proper operation

Repair procedures

• Replace the throttle position sensor if faulty

• Repair or replace damaged wiring

• Replace the electronic throttle body if necessary

Tools required

• OBD-II scanner

• Multimeter

• Throttle body cleaner

Estimated repair cost

$200 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Ford Focus

• Chevrolet Malibu

• Toyota Camry

Preventive measures

• Regularly clean the throttle body

• Perform routine maintenance checks

• Ensure wiring connections are secure

Error code type

Engine Performance

User experience recommendations

• Avoid driving aggressively until the issue is resolved

• Schedule a diagnostic check with a professional mechanic

Warranty information

Check with the vehicle manufacturer for specific warranty coverage on electronic throttle components.

Historical data

This code has been more prevalent in vehicles with high mileage or those that have not received regular maintenance.

Urgency level

Moderate – It's important to address this issue to prevent further engine performance problems.

Testing conditions

• Vehicle at operating temperature

• Engine running and idling

Component location

The electronic throttle control system is typically located on the engine's intake manifold.

FAQs

Q: Can I drive my car with a P1679 code?
A: It's possible to drive, but you may experience reduced power and performance. It's best to have it checked soon.

Q: Will the check engine light turn off after fixing the issue?
A: Yes, once the issue is resolved and the code is cleared, the check engine light should turn off.

Optional diagnostic gear

Tools that may help diagnose P1679

BlueDriver Pro Next diagnostic tool illustration

Budget · Bluetooth scanner

BlueDriver Pro Next

An app-based scanner with repair reports and enhanced system diagnostics on supported vehicles.

Helpful when live data and repair-report guidance can narrow down a drivability issue.

View on Amazon
Innova 3640 Fuel Pressure Tester diagnostic tool illustration

Specialty · Fuel pressure tester

Innova 3640 Fuel Pressure Tester

Helpful for no-start, lean, rich, injector, and fuel-delivery diagnosis.

Useful for checking whether fuel delivery is contributing to the fault.

View on Amazon
Innova 3612 Compression Tester diagnostic tool illustration

Specialty · Compression tester

Innova 3612 Compression Tester

Useful when misfire, mechanical condition, or low-cylinder-pressure problems are suspected.

Helpful when you need to rule out low compression or mechanical engine problems.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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