PACCAR Fault Code P0115: Engine Coolant Temperature – Data Erratic, Intermittent or Incorrect at Ignition ON

Code details

Manufacturer

PACCAR (Kenworth & Peterbilt)

Applies to

PACCAR MX-13 (2017–2020)

Fault code

P0115

J1939 SPN

110

FMI

2 — Data erratic, intermittent or incorrect

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 2 tells the shop the type of failure to test for: data erratic, intermittent or incorrect.
• 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 P0115 — Engine Coolant Temperature – Data Erratic, Intermittent or Incorrect during Overrun, at Ignition ON
• PACCAR Fault Code P0117 — Engine Coolant Temperature – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (A58)
• PACCAR Fault Code P0118 — Engine Coolant Temperature – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (A58)
• PACCAR Fault Code P0217 — Engine Coolant Temperature – Data Valid But Too High, Most Severe
• PACCAR Fault Code P1115 — Engine Coolant Temperature – Data Valid But Too High, Moderately Severe
• PACCAR Fault Code P2183 — Engine Coolant Temperature – Data Erratic, Intermittent, or Incorrect
• Cummins Fault Code 144 — Engine Coolant Temperature Sensor Circuit - shorted high
• Cummins Fault Code 145 — Engine Coolant Temperature Sensor Circuit - shorted low