P2DD7

Cold Start Fuel Injection Quantity B Lower Than Expected

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Cold starting difficulties
Unstable engine idling
Increased fuel consumption
Reduced engine power
Check Engine Light Is On

Causes

Dirty or faulty fuel injectors
Low fuel pressure
Fuel pump malfunction
Problems with the fuel pressure regulator
Coolant temperature sensor malfunction

How to Fix

Check the fuel pressure in the system
Clean or replace fuel injectors
Check the operation of the fuel pump
Check fuel pressure regulator
Check the coolant temperature sensor and its circuit

Related codes

P2DD6 P2DD8 P0172