PACCAR Fault Code P1573: Inlet Air Temperature in Inlet Manifold – Data Valid But Too High

Code details

Manufacturer

PACCAR (Kenworth & Peterbilt)

Applies to

PACCAR MX-13 (2017–2020)

Fault code

P1573

J1939 SPN

105

Truck models in source

Kenworth T680, T880, W900, T800; Peterbilt 579, 389, 567, 367

What to do next

• Read active and inactive codes with the OEM service tool and note the occurrence count.
• Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.

Related fault codes

• PACCAR Fault Code P0112 — Inlet Air Temperature in Inlet Manifold – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (A43)
• Cummins Fault Code 153 — Intake Manifold Temperature Sensor #1 Circuit - shorted high
• Cummins Fault Code 154 — Intake Manifold Temperature Sensor #1 Circuit - shorted low
• Cummins Fault Code 155 — Intake Manifold Temperature #1 High - Critical
• Cummins Fault Code 155 — Intake Manifold Temperature #1 High – Critical
• Cummins Fault Code 488 — Intake Manifold Temperature High – Warningl
• International Fault Code SPN 105 FMI 2 — IMT Signal – Erratic, Intermittent, or Incorrect
• International Fault Code SPN 105 FMI 3 — IMT Signal – Out of Range HIGH