VOLVO
ADM-0008 - Pump, additive. Signal too high
System
Additive Dosing Module (ADM)
Volvo models this fault code applies to
Applies to the following models:
4 modelsC30 (2007–2013), C70 (2006–2013), S40 (2004–2013), V50 (2004–2013)
Show models by year and engine (9)
- Volvo C30 (2007–2013)2007–2010Engine D4164T, D4204T only
- Volvo C30 (2007–2013)2011Engine D4164T only
- Volvo C70 (2006–2013)2008–2010Engine D4204T only
- Volvo S40 (2004–2013)2005–2006Engine D4164T, D4204T, D4204T2 only
- Volvo S40 (2004–2013)2007–2010Engine D4164T, D4204T only
- Volvo S40 (2004–2013)2011Engine D4164T only
- Volvo V50 (2004–2013)2005–2006Engine D4164T, D4204T, D4204T2 only
- Volvo V50 (2004–2013)2007–2010Engine D4164T, D4204T only
- Volvo V50 (2004–2013)2011Engine D4164T only
What does this fault code mean?
The ADM has seen the pump wiring shorted to the positive side of the supply. The high voltage stops the pump control from working as intended, and the fault shows up as the emissions warning lamp. The pump sits in the additive tank and is not replaced separately.
Possible causes
- Pump wiring shorted to the positive side of the supply
- Damaged additive pump
- Damaged additive dosing module (ADM)
What you can do
- 1Follow the pump wiring and look for chafing or damaged insulation
- 2Check the connector at the additive tank for damage and moisture
- 3Clear the code and check whether it returns
- 4If the code returns with no visible cause, the additive tank may need replacing
- 5If the fault remains, have a workshop with diagnostic equipment check the pump and the module
Symptoms you may notice1
- Emissions warning lamp lit
General guidance for car owners. Diagnosis on the car can point to a different cause.