VOLVO
ECM-P158800 - Throttle Control Detected Loss Of Return Spring. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
8 modelsS60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V60 (2011–), V70 (2008–), XC60 (2009–), XC70 (2008–)
Show models by year and engine (24)
- Volvo S60 (2011–)2011Engine B4204T6, B4204T7 only
- Volvo S60 (2011–)2012–2013Engine B4204T7 only
- Volvo S60 (2011–)2014Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T7, B4204T9, D4204T5 only
- Volvo S60 (2011–)2015Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T9, D4204T5 only
- Volvo S80 (2007–)2010Engine B4204T6 only
- Volvo S80 (2007–)2011–2013Engine B4204T6, B4204T7 only
- Volvo S80 (2007–)2014Engine B4204T11, B4204T12, B4204T15, B4204T6, B4204T7, D4204T5 only
- Volvo S80 (2007–)2015Engine B4204T11, B4204T12, B4204T15, D4204T5 only
- Volvo V40 (2013–)2015Engine B4204T11, D4204T14 only
- Volvo V40 Cross Country (2013–)2015Engine B4204T11, D4204T14 only
- Volvo V60 (2011–)2011Engine B4204T6, B4204T7 only
- Volvo V60 (2011–)2012–2013Engine B4204T7 only
- Volvo V60 (2011–)2014Engine B4204T11, B4204T12, B4204T15, B4204T7, B4204T9, D4204T5 only
- Volvo V60 (2011–)2015Engine B4204T11, B4204T12, B4204T15, B4204T9, D4204T5 only
- Volvo V70 (2008–)2010Engine B4204T6 only
- Volvo V70 (2008–)2011Engine B4204T6, B4204T7 only
- Volvo V70 (2008–)2012–2013Engine B4204T7 only
- Volvo V70 (2008–)2014Engine B4204T11, B4204T7, D4204T5 only
- Volvo V70 (2008–)2015Engine B4204T11, D4204T5 only
- Volvo XC60 (2009–)2010Engine B4204T6 only
- Volvo XC60 (2009–)2011–2012Engine B4204T6, B4204T7 only
- Volvo XC60 (2009–)2013Engine B4204T7 only
- Volvo XC60 (2009–)2014–2015Engine B4204T10, B4204T11, B4204T12, B4204T15, B4204T7, B4204T9, D4204T5 only
- Volvo XC70 (2008–)2014–2015Engine B4204T11, D4204T5 only
What does this fault code mean?
Although the code is named as a loss of return spring, the condition is that the throttle does not return within a reasonable time during the check. When the engine is switched off, the engine control module (ECM) runs a mechanical check by moving the throttle to the open position and measuring how long it takes to return to its rest position.
Possible causes
- The throttle sticks or is blocked, for example by dirt, oil film or ice
- Contact resistance or corrosion at the throttle body connector to the ECM
- Open circuit or short to ground or voltage in the wires to the throttle motor
- The wires to the throttle motor are shorted to each other
- Damaged throttle body
What you can do
- 1Check that the fuses are intact. Their location is in the owner's manual or on the fuse box cover.
- 2Check that the throttle moves freely by hand when the engine is off, and that it is not blocked by dirt or oil film.
- 3If the throttle is dirty, have a workshop clean the throttle body.
- 4With the ignition off, use a multimeter to check that the wires to the throttle motor have no break and no contact with ground or voltage.
- 5Check the connectors between the engine control module and the throttle body for looseness, contact resistance and corrosion.
Symptoms you may notice4
- The engine performs poorly or lacks power
- The idle is uneven
- The check engine lamp lights or behaves abnormally
- Yellow warning symbol and text message in the display
What the fault can affect1
- Depending on the nature of the fault, the power to the throttle motor may be switched off, so the throttle goes to its spring-return position
General guidance for car owners. Diagnosis on the car can point to a different cause.