VOLVO
ECM-P066668 - PCM / ECM / TCM Internal Temperature Sensor Circuit High. Algorithm Based Failures. Event information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
3 modelsS60 (2011–), S80 (2007–), V70 (2008–)
Show models by year and engine (9)
- Volvo S60 (2011–)2011–2012Engine B5254T5 only
- Volvo S80 (2007–)2007–2008Engine B5254T6 only
- Volvo S80 (2007–)2009Engine B5254T6, B5254T8 only
- Volvo S80 (2007–)2010–2011Engine B5254T10, B5254T11, B5254T8 only
- Volvo S80 (2007–)2012Engine B5254T10 only
- Volvo V70 (2008–)2008Engine B5254T6 only
- Volvo V70 (2008–)2009Engine B5254T6, B5254T8 only
- Volvo V70 (2008–)2010–2011Engine B5254T10, B5254T11 only
- Volvo V70 (2008–)2012Engine B5254T10 only
What does this fault code mean?
This event-controlled code is meant as information and does not mean the control module is faulty where it is active. It concerns the circuit of the module's internal temperature sensor when that sensor reads too high. The code has no noticeable consequences for the driver.
Possible causes
- The code is an information code and has no cause of its own
What you can do
- 1Read the code and check whether other codes are stored in the engine control module; trace those first
- 2Clear the code and drive the car for a while to see whether it returns
- 3If the code returns when no other codes are stored, have a workshop check the engine 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.