VOLVO
ECM-P040168 - Exhaust Gas Recirculation A Flow Insufficient Detected. Algorithm Based Failures. Event information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsS80 (2007–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (6)
- Volvo S80 (2007–)2009Engine D5244T10 only
- Volvo S80 (2007–)2010Engine D5244T10, D5244T14, D5244T19 only
- Volvo V70 (2008–)2009Engine D5244T10 only
- Volvo V70 (2008–)2010Engine D5244T10, D5244T14, D5244T19 only
- Volvo XC60 (2009–)2010Engine D5244T10, D5244T14, D5244T16 only
- Volvo XC70 (2008–)2010Engine D5244T10, D5244T14, D5244T16 only
What does this fault code mean?
The engine control module (ECM) monitors exhaust gas recirculation (EGR) and sets the fault when the flow is too high. The code is an information code for an algorithm fault in the control module and does not point to any single component. Although the code is named as insufficient flow, the condition is excessive flow.
Possible causes
- No specific cause is listed for this particular code
What you can do
- 1If other fault codes for the air system are stored alongside this one, troubleshoot from those first
- 2Read and clear the fault code, then see whether it returns with the engine running
- 3If you have a diagnostic tool, compare the EGR valve position at idle with the value under throttle and check that it follows the throttle
- 4Check that the EGR valve is not sticking from soot or dirt
- 5If the fault returns with no other air system codes, have a workshop read out the control module
Symptoms you may notice1
- No noticeable symptoms for the driver
General guidance for car owners. Diagnosis on the car can point to a different cause.