P20D7

Exhaust Aftertreatment Fuel Supply Control Circuit/Open

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

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

Causes

Fuel control circuit open
Fuel pressure sensor malfunction
Problems with the engine control unit
Fuel supply solenoid valve malfunction
Wiring harness damage

How to Fix

Check the integrity of the fuel control circuit
Check the operation of the fuel pressure sensor
Diagnose the engine control unit
Check the fuel supply solenoid valve
Inspect the wiring harness for damage

Related codes

P20D8 P20D9 P20DA