C0319 Engine Trouble Code
What is C0319?
When C0319 code appears, first check your gas cap. Pull over safely, ensure it is tight, and inspect for cracks. A loose or damaged gas cap affects fuel-system pressure and emissions. A replacement cap costs about $3–$10. This simple fix can resolve the code and improve fuel economy.
Code Information
| Code Type: | OBD-II Chassis (C) Trouble Code |
| System: | Chassis |
| Code: | C0319 |
C0319 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
C0319 Code Structure
Understanding what each digit means in the C0319 chassis trouble code:
| C | 0 | 3 | 1 | 9 |
|---|---|---|---|---|
| Chassis Code | Intake Valve Control Solenoid Circuit Low | Throttle/Pedal Position Sensor/Switch A Circuit Intermittent | Engine Shutoff Solenoid Malfunction | Reverse Input Circuit |
How to Fix C0319
Diagnostic Steps:
Oxygen sensors measure exhaust gas oxygen content to optimise air-fuel ratio. This optimisation improves fuel economy and reduces emissions. Sensors degrade over time and require periodic replacement.
Repair Solution:
A/C pressure sensor monitors refrigerant pressure changes. DTC sets when pressure change falls outside calibration. Verify A/C system function, refrigerant charge, and electrical connections.
Technical Notes:
For C0319, verify VCT solenoid operation. Look for stuck or sticking valves caused by contamination. Consult vehicle-specific repair manual for proper component testing procedures.
C0319 Description
C0319 engine trouble code is related to Reverse Input Circuit.
Main Cause
The primary reason for C0319 OBD-II Engine Trouble Code is: Throttle/Pedal Position Sensor/Switch A Circuit Intermittent.