PACCAR Fault Code P102A: Exhaust Gas Temperature After BPV – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C11)

Code details

Manufacturer

PACCAR (Kenworth & Peterbilt)

Applies to

PACCAR MX-13 (2017–2020)

Fault code

P102A

J1939 SPN

173

FMI

3 — Voltage above normal, or shorted to high source

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.
• FMI 3 tells the shop the type of failure to test for: voltage above normal, or shorted to high source.
• 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 P102B — Exhaust Gas Temperature After BPV – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C11)
• PACCAR Fault Code P103B — PTO Status Switch – Data Erratic, Intermittent or Incorrect
• PACCAR Fault Code P1717 — Exhaust Gas Temperature After BPV – Data Erratic, Intermittent or Incorrect
• International Fault Code SPN 173 FMI 2 — EGT Signal – Erratic, Intermittent, or Incorrect
• International Fault Code SPN 173 FMI 3 — EGT Signal – Out of Range HIGH
• International Fault Code SPN 173 FMI 4 — EGT Signal – Out of Range LOW
• International Fault Code SPN 173 FMI 2 — Engine Exhaust Temperature: Data Erratic, Intermittent Or Incorrect
• International Fault Code SPN 173 FMI 3 — Engine Exhaust Temperature: Voltage Above Normal, Or Shorted To High Source