P0573 Engine Trouble Code
What is P0573?
The P0573 check-engine light can indicate issues ranging from minor (loose gas cap) to serious (catalytic converter failure). Professional diagnostic scanning at a dealer or shop will identify the exact cause and required repairs.
Code Information
| Code Type: | OBD-II Powertrain (P) Trouble Code |
| System: | Powertrain |
| Code: | P0573 |
P0573 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
P0573 Code Structure
Understanding what each digit means in the P0573 powertrain trouble code:
| P | 0 | 5 | 7 | 3 |
|---|---|---|---|---|
| Powertrain Code | Intake Valve Control Solenoid Circuit Low | Fuel Composition Sensor Circuit Malfunction | Cylinder 10 Contribution/Balance Fault | Exhaust Gas Recirculation Sensor B Circuit High |
How to Fix P0573
Diagnostic Steps:
Check if fuel pump primes when key is turned to ON. Measure fuel pressure and verify bright white-blue spark at all plugs. Also verify mechanical timing alignment.
Repair Solution:
Crankshaft position sensor signals the computer for precise ignition and fuel injection timing. Faulty sensors cause rough running and reduced efficiency. Modern vehicles enter limp mode and illuminate the check-engine light.
Technical Notes:
Parts or components should not be replaced based solely on P0573 DTC. Consult your vehicle service manual for proper diagnostic procedures, possible causes, and required testing before replacement.
P0573 Description
P0573 OBD-II Trouble Code: When the brake pedal is depressed, the stop light switch sends a signal to the Engine Control Module (
Main Cause
The primary reason for P0573 OBD-II Engine Trouble Code is: Fuel Composition Sensor Circuit Malfunction.