VOLVO
ECM-P003A85 - Turbocharger/Supercharger Boost Control A Position Exceeded Learning Limit. Bus Signal / Message Failures. Signal above allowable range
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
12 modelsC30 (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 (26)
- Volvo C30 (2007–2013)2011–2013Engine D5204T, D5204T5 only
- Volvo C70 (2006–2013)2011Engine D5204T, D5204T5 only
- Volvo C70 (2006–2013)2012–2013All engines except: B5254T7
- Volvo S40 (2004–2013)2011–2012Engine D5204T, D5204T5 only
- Volvo S60 (2011–)2011Engine D5204T2 only
- Volvo S60 (2011–)2012Engine D5204T3 only
- Volvo S60 (2011–)2013–2015Engine D5204T3, D5204T7 only
- Volvo S80 (2007–)2011Engine D5204T2 only
- Volvo S80 (2007–)2012, 2015Engine D5204T3 only
- Volvo S80 (2007–)2013–2014Engine D5204T3, D5204T7 only
- Volvo V40 (2013–)2013–2014Engine D5204T4, D5204T6 only
- Volvo V40 (2013–)2015Engine D5204T6 only
- Volvo V40 Cross Country (2013–)2013–2014Engine D5204T4, D5204T6 only
- Volvo V40 Cross Country (2013–)2015Engine D5204T6 only
- Volvo V50 (2004–2013)2011–2012Engine D5204T, D5204T5 only
- Volvo V60 (2011–)2011Engine D5204T2 only
- Volvo V60 (2011–)2012Engine D5204T3 only
- Volvo V60 (2011–)2013–2015Engine D5204T3, D5204T7 only
- Volvo V70 (2008–)2011Engine D5204T2 only
- Volvo V70 (2008–)2012Engine D5204T3 only
- Volvo V70 (2008–)2013–2015Engine D5204T3, D5204T7 only
- Volvo XC60 (2009–)2011Engine D5204T2 only
- Volvo XC60 (2009–)2012Engine D5204T3 only
- Volvo XC60 (2009–)2013–2015Engine D5204T3, D5204T7 only
- Volvo XC70 (2008–)2011Engine D5204T2 only
- Volvo XC70 (2008–)2012–2015Engine D5204T3 only
What does this fault code mean?
The engine control module angles the turbo guide rails using readings from the position sensor and continually works out new adaptation limits. If these values differ too much from the factory adaptation, or from an adaptation made with a diagnostic tool, the code is set. Although the code is labelled as a bus or message fault, it concerns the turbo adaptation.
Possible causes
- The vacuum hose to the turbo control has cracked or come loose
- The turbo position sensor is not showing the correct position
- The mechanism that angles the guide rails has jammed
What you can do
- 1Check the vacuum hoses to and from the turbo control valve for blockage, condensation and dirt, and make sure nothing has come loose
- 2Examine the hose for cracks or leaks
- 3With a diagnostic tool, activate the turbo control at idle and see whether the turbo position sensor responds. If it does not, it may need replacing
- 4Troubleshoot the position sensor connector and wiring for looseness, oxidation, open circuit and short to ground using a multimeter
- 5Have a workshop check that the turbo guide rails move freely and that the adaptation passes. If the turbocharger is replaced, the workshop must adapt the turbo system
- 6Test drive the car under different loads, clear the code and check whether it comes back
Symptoms you may notice1
- Poor performance and lack of power when driving
What the fault can affect1
- The engine control module does not use the new adaptation values
General guidance for car owners. Diagnosis on the car can point to a different cause.