Drivable short-term, but fix now to avoid damage.
This code sets when the engine computer detects a low signal or low circuit voltage on the 'B' fuel metering control of the diesel injection pump. It usually means the pump isn't getting or reporting the right metering signal, often due to wiring shorts, a failing metering valve, or a pump electrical fault. Repairs commonly involve checking the circuit and connectors first, then the pump's control components if needed.
$250 – $1800
Varies by vehicle and root cause.
Short trips are sometimes possible, but it's risky to keep driving. A low metering signal can cause hard starting and power loss that gets worse, and the engine may quit. Have it diagnosed soon, and if it's running poorly or in limp mode, head straight to a shop.
If the problem is wiring or a connector, repairs can be a few hundred dollars. If the metering valve or injection pump needs replacement, expect roughly $800 to $1,800 with parts and labor. Diagnosis confirms which path applies before any big spend.
Yes, it's fairly serious because it affects how much fuel the pump delivers. It can lead to a no-start or stranded vehicle if ignored. It's not usually an instant engine-killer, but it deserves prompt attention.
Not necessarily. A 'low' reading often comes from wiring or connector faults before the pump itself. A technician will test the circuit first, and only condemn the pump after confirming the wiring and metering valve are good.