P21BB

Cold Start Cylinder 6 Injection Timing

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Unstable engine idling
Increased fuel consumption
Reduced engine power
Difficulty starting the engine in cold weather
Increased emissions of harmful substances

Causes

Malfunction of the fuel injector of cylinder 6
Problems with the fuel pump or pressure regulator
Fuel system contamination
Malfunction of sensors (DPKV, DPRV)
Problems with the engine control unit

How to Fix

Check the condition of the fuel injector of cylinder 6
Diagnose the fuel system (pressure, pump performance)
Check the operation of the crankshaft and camshaft position sensors
Scan the engine control module for other errors
If necessary, replace the fuel injector or other faulty components

Related codes

P21BA P21BC P21BD