2013 PACCAR MX-13 – P0095 Intercooler temperature – Data erratic, intermittent, or incorrect at ignition on

Fault code information

3 drive cycle recovery
Readiness group – None
Freeze frame type – Comprehensive

Description of component(s)

The intercooler outlet temperature is measured before the EGR mixer.
Effect on the system:
* Monitors intercooler performance

Location of component(s)

Diagnostic condition

This diagnostic runs:
* when the ignition has been keyed off continuously for at least 8 hours;
* difference between the coolant temperature and ambient temperature is less than 15°C [59°F]
* ambient temperature is more than -20°C [-4°F]

Set condition of fault code

* The PCI ECU (D420) detects that the measured intercooler temperature sensor differs by more than        3°C [37°F] from the average of other temperature sensor readings on/off the engine for more than 5        seconds (after the ignition has been keyed off for at least 8 hours).

Reset condition of fault code

The 8-hour ignition off diagnostics consists of three separate steps:
* The vehicle ignition may NOT be switched on or engine started for 8-10 consecutive hours (ideal               situation would be overnight).
* Once the 8 to 10 consecutive hours have been reached, key on the ignition (NO engine start) and wait      for 10 seconds to allow the system to power up and the diagnostics to run.

* Start the engine and let it idle for 2 minutes.
This DTC changes to inactive when the fault is no longer detected.

Electrical diagram(s)

Technical data

Component check, intercooler temperature sensor (F750) Preparation

* Key off the ignition
* Disconnect connector F750
* Measure on component connector F750

Possible causes

Intercooler temperature sensor deviation

Additional information

For this diagnostic, the intercooler temperature sensor (F750) reading is compared with an average of other temperature sensor readings on/off the engine after the ignition has been keyed off for at least 8 hours.

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