P20DD

Exhaust Aftertreatment Fuel Pressure Sensor Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Increased fuel consumption
Problems with diesel particulate filter regeneration
Unstable engine idling

Causes

Fuel pressure sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in sensor connectors
Problems with the engine control module
Dirty or damaged wiring harness

How to Fix

Check the continuity of the fuel pressure sensor circuit
Test the fuel pressure sensor
Check sensor connectors and connections
If necessary, replace the fuel pressure sensor
Check and update ECU software

Related codes

P20DE P20DF P20E0