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The diagnostic trouble code P306D (specifically P306D-22) in Peugeot vehicles indicates a "coherence" or consistency issue between the electronic throttle housing position and the inlet air pressure.

Rating: ⭐⭐⭐⭐ (The car is back, even if my wallet is a bit lighter.) p306d peugeot fixed

  1. Check and Clean the DPF: Inspect the DPF and clean it if necessary. Make sure to follow the manufacturer's guidelines for cleaning and maintenance.
  2. Replace the DPF Pressure Sensor: If the sensor is faulty, replace it with a new one. Ensure the replacement sensor is compatible with your vehicle.
  3. Inspect and Repair Wiring or Electrical Issues: Check the wiring and electrical connectors for damage, corrosion, or wear. Repair or replace them as needed.
  4. Update ECU Software: If the ECU software is outdated or faulty, update it to the latest version.
  5. Reset the Error Code: After making repairs, use a code reader or scan tool to reset the error code.

Reduced engine power and limited RPMs to protect the engine. Cruise Control Failure: The diagnostic trouble code P306D (specifically P306D-22 )

Q: Will removing the AdBlue system fix P306D? Emissions system deletion is illegal in most regions (EU, UK, US) and will cause MOT/failure. Not recommended. Check and Clean the DPF: Inspect the DPF

According to technical community discussions and expert diagnostics, the issue is frequently linked to the air intake and emission systems:

  • Peugeot 208, 308, 508
  • Peugeot 2008, 3008, 5008
  • Peugeot Partner and Expert vans

The Manifold Absolute Pressure (MAP) sensor measures the air coming into the engine. If it is contaminated with oil or carbon deposits, it sends "incoherent" data to the ECU.

Throttle Body Cleaning: Contamination or carbon buildup on the electronic throttle butterfly can prevent it from reaching the position commanded by the ECU, triggering the "coherence" error.