VOLVO
LPG-0117 - Engine coolant temperature (ECT) sensor signal. Signal too low
System
Liquid Petroleum Gas (LPG)
Volvo models this fault code applies to
Applies to the following models:
2 modelsS40 (1996–2004), V40 (1996–2004)
Show models by year and engine (2)
What does this fault code mean?
The LPG control module receives the engine coolant temperature from the engine control module (ECM). The code is set when that signal has been too low for a while with the engine running, and because the signal comes from the engine control module, its codes should be read first.
Possible causes
- Contact resistance or oxidation in the connector on the engine control module (ECM)
- Contact resistance or oxidation in the connector on the LPG control module
- Open circuit or short circuit to ground in the signal wire
- Incorrect signal sent from the engine control module (ECM)
What you can do
- 1Read the codes in the engine control module (ECM) first, since the signal originates there
- 2Start the engine and read the coolant temperature with diagnostic equipment; if it looks normal, the fault has probably been present but is not active at the moment
- 3Check the connectors on the engine control module and the LPG control module for poor contact and oxidation
- 4Check the signal wire for chafing and damage, and use a multimeter to confirm it has no contact with ground
- 5Erase the code and road test the car to see whether it returns
Symptoms you may notice1
- The engine does not run on gas
General guidance for car owners. Diagnosis on the car can point to a different cause.