B0679 Engine Trouble Code
What is B0679?
B0679 code can indicate a faulty oxygen sensor, which may eventually damage the catalytic converter (repair cost: $2,000–$2,200). Professional diagnosis costs around $200–$210. Oxygen sensors are often straightforward to replace — check your owner's manual for location and instructions. This issue should be addressed promptly to prevent further damage.
Code Information
| Code Type: | OBD-II Body (B) Trouble Code |
| System: | Body |
| Code: | B0679 |
B0679 Symptoms
Check Engine Light
Illuminated dashboard warning
Engine Stalling
Engine stops unexpectedly or misfires
Performance Issues
Reduced power or acceleration
Starting Problems
Difficulty starting the engine
B0679 Code Structure
Understanding what each digit means in the B0679 body trouble code:
| B | 0 | 6 | 7 | 9 |
|---|---|---|---|---|
| Body Code | Intake Valve Control Solenoid Circuit Low | Fuel Temperature Sensor B Circuit Range/Performance | Cylinder 10 Contribution/Balance Fault | Reverse Input Circuit |
How to Fix B0679
Diagnostic Steps:
Regarding B0679, carefully inspect the wire harness near the intake manifold bracket, best accessed from below near the oil filter. Look for chafing, pinching, or damaged insulation.
Repair Solution:
Regular maintenance of indicator and headlight bulbs ensures proper function. Maintain paint condition to prevent rust. Modern products make these maintenance tasks straightforward and accessible.
Technical Notes:
B0679 DTC indicating a sensor fault does not always mean the sensor itself is bad. The issue may stem from the systems being monitored or even the sensor wiring. Proper diagnosis is essential.
B0679 Description
B0679 engine trouble code is related to Reverse Input Circuit.
Main Cause
The primary reason for B0679 OBD-II Engine Trouble Code is: Fuel Temperature Sensor B Circuit Range/Performance.