P1552 Engine Trouble Code
What is P1552?
The P1552 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: | P1552 |
P1552 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
P1552 Code Structure
Understanding what each digit means in the P1552 powertrain trouble code:
| P | 1 | 5 | 5 | 2 |
|---|---|---|---|---|
| Powertrain Code | Fuel And Air Metering | Fuel Composition Sensor Circuit Malfunction | Cylinder 1 Injector Circuit Low | Glow Plug/Heater Circuit 'A' Malfunction |
How to Fix P1552
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:
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 P1552, verify VCT solenoid operation. Look for stuck or sticking valves caused by contamination. Consult vehicle-specific repair manual for proper component testing procedures.
P1552 Description
P1552 OBD-II Trouble Code: Idle Speed Actuator Short is one of the definitions for the P1552; however your vehicles manufacturer may have a different definition for the P1552 code. Please check below for your specific make.
Main Cause
The primary reason for P1552 OBD-II Engine Trouble Code is: Fuel Composition Sensor Circuit Malfunction.