VOLVO
ECM-P126100 - Cylinder 1 High To Low Side Short. General Failure Information. No sub type information
System
Engine Control Module (ECM)
Volvo models this fault code applies to
Applies to the following models:
9 modelsC30 (2007–2013), S40 (2004–2013), S60 (2011–), S80 (2007–), V40 (2013–), V40 Cross Country (2013–), V50 (2004–2013), V60 (2011–), V70 (2008–)
Show models by year and engine (9)
- Volvo C30 (2007–2013)2011–2013Engine D4162T only
- Volvo S40 (2004–2013)2011–2012Engine D4162T only
- Volvo S60 (2011–)2011–2015Engine D4162T only
- Volvo S80 (2007–)2012–2015Engine D4162T only
- Volvo V40 (2013–)2013–2015Engine D4162T only
- Volvo V40 Cross Country (2013–)2013–2015Engine D4162T only
- Volvo V50 (2004–2013)2011–2012Engine D4162T only
- Volvo V60 (2011–)2011–2015Engine D4162T only
- Volvo V70 (2008–)2012–2015Engine D4162T only
What does this fault code mean?
The engine control module (ECM) drives the injectors through two integrated high-power output stages. This code applies to cylinder 1 and is set when the ECM detects a faulty signal to the injector in that cylinder while the engine is running. The code gives no further fault type and can be a knock-on fault from another injector or fuel system fault.
Possible causes
- Knock-on fault from a fault detected by another trouble code test for the injectors and/or fuel system
- Damaged injector
What you can do
- 1Check that the fuses are intact. The locations are in the owner's manual or on the fuse box cover.
- 2Read the stored codes. If there is a code for the injectors or the fuel system, deal with that first, because the cylinder 1 code may be a knock-on from it.
- 3If you have a diagnostic tool, activate the injector for cylinder 1 and listen for a click, then compare with the other cylinders.
- 4Check that the connector to the cylinder 1 injector is secure and free from corrosion.
- 5If the fault returns, have a workshop with diagnostic equipment check the cylinder 1 injector, as it may be damaged.
Symptoms you may notice3
- The Check engine (malfunction) lamp comes on or behaves abnormally
- Text message and warning symbol in the display
- Poor performance, the car lacks power
What the fault can affect2
- Engine output and speed may be limited
- Soot particles are not burned off as normal
General guidance for car owners. Diagnosis on the car can point to a different cause.