2013 PACCAR MX-13 – P0117 Coolant Temperature – Voltage too low or short circuit to ground on ECU D420 pin A58

Fault code information

1 trip MIL
3 drive cycle recovery
Readiness group – None
Freeze frame type – Cooling

Description of component(s)

The coolant temperature is measured in the coolant return gallery at the right rear end of the cylinder block.
Effect on the system:
* Calculates the quantity of fuel to inject and the injection timing
* Displays the coolant temperature to the driver
* Displays warnings to the driver concerning high coolant temperature
* Limits the engine torque when the coolant temperature is too high
* Limits the maximum engine speed when the engine is cold
* Enables condition for severity of (OBD) diagnostic checks
* Fast idle speed control
* Cold start aid

Location of component(s)

Diagnostic condition

When Sensor output voltage is too low (below 0.23V)

Set condition of fault code

The PCI-2 detects that the sensor output voltage is too low (below 0.23 V).

Reset condition of fault code

This fault code changes to inactive immediately after the diagnostic runs and passes.

Electrical diagram(s)

Technical data

Possible causes

* Faulty wiring
* Faulty connector
* Faulty sensor

Additional information

No additional information available.

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