C2879 Engine Trouble Code
What is C2879?
C2879 indicates potential catalytic converter failure. If completely failed, your vehicle may not run properly and fuel economy will suffer significantly. Average replacement cost is $2,000–$2,140. This repair requires professional service and should not be delayed.
Code Information
| Code Type: | OBD-II Chassis (C) Trouble Code |
| System: | Chassis |
| Code: | C2879 |
C2879 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
C2879 Code Structure
Understanding what each digit means in the C2879 chassis trouble code:
| C | 2 | 8 | 7 | 9 |
|---|---|---|---|---|
| Chassis Code | Fuel And Air Metering (Injector Circuit Malfunctions Only) | Engine Oil Temperature Sensor Malfunction | Cylinder 10 Contribution/Balance Fault | Reverse Input Circuit |
How to Fix C2879
Diagnostic Steps:
The catalytic converter has oxygen sensors before and after it. When warm and in closed-loop mode, the upstream O2 sensor reading should fluctuate, while downstream should remain steady.
Repair Solution:
Firing order is engineered to minimise vibration. Altering firing order results in mistimed ignition and poor engine operation. Consult vehicle-specific repair manual for correct firing order.
Technical Notes:
C2879 on electronically controlled automatic transmissions relates to shift solenoid operation. The solenoid actuates hydraulic circuits controlling clutches or bands for gear changes.
C2879 Description
C2879 engine trouble code is related to Reverse Input Circuit.
Main Cause
The primary reason for C2879 OBD-II Engine Trouble Code is: Engine Oil Temperature Sensor Malfunction.