What does fault code ECM-P00047B mean?

Diagnostic fault code details for ECM-P00047B (Volvo C30 (2007–2013), Volvo C70 (2006–2013), Volvo C70 (2006–2013)). Repair service at OBD Tuning.

VOLVO

ECM-P00047B - Fuel Volume Control Valve, Circuit High. Mechanical Failures. Low fluid level

System

Engine Control Module (ECM)

Volvo models this fault code applies to

Applies to the following models:

12 models

C30 (2007–2013), C70 (2006–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)

Show models by year and engine (43)

What does this fault code mean?

This code concerns the high-pressure side of the fuel system, where fuel flow can be either too high or too low compared with what is expected. The engine control module compares the high-pressure pump control value with limits that depend on load and engine speed. The test only starts once the engine is running.

Possible causes

Faulty fuel flow control valve
High-pressure pump control valve stuck
Faulty injection pump
Faulty feed pump
Fuel leak on the high-pressure side
Faulty fuel pressure sensor

What you can do

1Read the codes, fix any feed pump codes first, then clear the codes and road test
2Check the fuel level in the tank and top up if it is low
3Look for fuel leaks on the high-pressure side and check whether the fuel filter is clogged
4Check the connectors at the fuel pressure sensor and the flow control valve for loose or corroded parts
5If you have a diagnostic tool: read the valve control value in live data with the engine idling and note whether it is steady
6If the fault returns: have a workshop with diagnostic equipment check the high-pressure pump and the fuel flow control valve

Symptoms you may notice2

Uneven idle
Unusual noise while driving, not clear when it occurs

General guidance for car owners. Diagnosis on the car can point to a different cause.