P0059 Engine Trouble Code
What is P0059?
P0059 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: | P0059 |
P0059 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
P0059 Code Structure
Understanding what each digit means in the P0059 powertrain trouble code:
| P | 0 | 0 | 5 | 9 |
|---|---|---|---|---|
| Powertrain Code | Intake Valve Control Solenoid Circuit Low | Ambient Air Temperature Sensor Circuit Low | Cylinder 1 Injector Circuit Low | Reverse Input Circuit |
How to Fix P0059
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:
Verify all electrical connections are clean and tight. Check for damaged wiring, especially in high-heat or high-vibration areas. Use manufacturer wiring diagrams for accurate diagnosis.
Technical Notes:
P0059 on electronically controlled automatic transmissions relates to shift solenoid operation. The solenoid actuates hydraulic circuits controlling clutches or bands for gear changes.
P0059 Description
P0059 OBD-II Trouble Code: HO2S Heater Resistance Bank 2 Sensor 1 is the generic definition for the P0059; however your vehicles manufacturer may have a different definition and information for the P0059 code.
Main Cause
The primary reason for P0059 OBD-II Engine Trouble Code is: Ambient Air Temperature Sensor Circuit Low.