P0480 Engine Trouble Code
What is P0480?
P0480 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 Powertrain (P) Trouble Code |
| System: | Powertrain |
| Code: | P0480 |
P0480 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
P0480 Code Structure
Understanding what each digit means in the P0480 powertrain trouble code:
| P | 0 | 4 | 8 | 0 |
|---|---|---|---|---|
| Powertrain Code | Intake Valve Control Solenoid Circuit Low | O2 Sensor Heater Circuit Malfunction | Ignition/Distributor Engine Speed Input Circuit Malfunction | Shift Solenoid E Performance or Stuck Off |
How to Fix P0480
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:
Disconnected, dirty, or fouled spark plugs commonly prevent proper engine operation. Replace spark plugs every season or 25 hours. Verify proper spark plug gap. If plugs are good, check ignition components: spark plug wires, coils, and ignition module.
Technical Notes:
Parts or components should not be replaced based solely on P0480 DTC. Consult your vehicle service manual for proper diagnostic procedures, possible causes, and required testing before replacement.
P0480 Description
P0480 OBD-II Trouble Code: The electric cooling fan is controlled by the Powertrain Control Module (
Main Cause
The primary reason for P0480 OBD-II Engine Trouble Code is: O2 Sensor Heater Circuit Malfunction.