P050E: Idle Speed / Vehicle Speed Control Fault

P050E on the Mercedes Sprinter VS30 falls under the idle speed / vehicle speed control fault group for the OM642 V6 diesel. The ECU sets this code when it detects an out-of-range condition in this system. Use the symptoms, common causes, and diagnostic steps below as a starting point, and always read the live data and freeze-frame for this specific code before replacing parts. If you're searching for the P050E Mercedes Sprinter fix or P050E VS30 / OM642 information, start with a full scan to capture any related codes stored at the same time.

• Erratic, high, or low idle
• Stalling at stops
• Check engine light
• Surging at idle
• Speedometer or cruise irregularities (on speed-signal faults)

• Intake air leak affecting idle
• Carbon buildup on intake/EGR affecting idle control
• Faulty speed sensor or signal
• Throttle/charge-flap actuator fault
• Electrical load or accessory drag at idle

1. 1Scan and record all codes; read freeze-frame for idle RPM and load.
2. 2Inspect the intake for leaks and the EGR/intake for carbon.
3. 3Monitor live idle control and speed-signal data.
4. 4Test the relevant actuator or speed sensor against spec.
5. 5Repair the leak or replace the failed component, then verify stable idle/speed signal.

1. 1Repair intake air leaks affecting idle control.
2. 2Clean carbon from the intake/EGR affecting idle stability.
3. 3Replace a faulty vehicle-speed sensor.
4. 4Replace or repair the throttle/charge-flap actuator.