Variant 1
Applies to: EMS S7
What does Scania EMS fault code 52 mean?
The voltage in the solenoid valve circuit that controls the wastegate valve has been incorrect.
What causes Scania DTC 52?
The turbocharger wastegate valve is controlled by a solenoid valve (V109), which receives signals from the engine management system. Short circuit to ground in solenoid valve circuit.
How does the system react?
The charge air pressure is regulated incorrectly, may lead to poor driveability.
How to fix Scania EMS fault code 52?
Check the solenoid valve, cable harnesses and harness-to-harness connectors.
Variant 2
Applies to: EMS S8
Detection
The voltage in the solenoid valve circuit that controls the wastegate valve has been incorrect.
Possible cause
The turbocharger wastegate valve is controlled by a solenoid valve (V109), which receives signals from the engine management system. Short circuit to ground in solenoid valve circuit.
System reaction
The charge air pressure is regulated incorrectly, may lead to poor driveability.
How to fix
Check the solenoid valve, cable harnesses and connectors.
This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.