PACCAR (Kenworth & Peterbilt)
PACCAR fault code
SPN 175 / FMI 18
PACCAR Fault Code P1570: Engine Oil Temperature – Data Erratic, Intermittent or Incorrect, During Engine Warm-Up
P1570 on PACCAR (Kenworth & Peterbilt) engines means: Engine Oil Temperature – Data Erratic, Intermittent or Incorrect, During Engine Warm-Up. The failure mode (FMI 18) is “data valid but below normal range (moderately severe)”.
Code details
- Manufacturer
- PACCAR (Kenworth & Peterbilt)
- Applies to
- PACCAR MX-13 (2017–2020)
- Fault code
- P1570
- J1939 SPN
- 175
- FMI
- 18 — Data valid but below normal range (moderately severe)
- 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 18 tells the shop the type of failure to test for: data valid but below normal range (moderately severe).
- Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.
Get this code diagnosed
Send one request and nearby diesel shops and mobile mechanics can quote the repair.
Owner-OperatorAdd this truck & start trial
Run your own truck?
Log maintenance, track fault codes, and get roadside breakdown dispatch.
$39.99/mo
Cancel anytime
More ways Repairius keeps vehicles running
Tools for owner-operators, shops, fleets and drivers — all in one place.
Auto & Truck Shop OS
From $99.99/mo- Work orders & job management
- Digital vehicle inspections
- Parts lookup & inventory
- Estimates, invoices & payments
Fleet Maintenance
From $129/mo- Preventive maintenance schedules
- Driver DVIRs & defect reports
- Safety & compliance clearance
- Preferred shop dispatch & approvals
My Garage
100% free- Digital glovebox for your vehicles
- Maintenance history & reminders
- Recall alerts
- Book verified local shops
Owner-Operator? Track this truck for $39.99/mo
StartFix these trucks? Get your shop listed free·Find a diesel shop
Related fault codes
- PACCAR Fault Code P0195 — Engine Oil Temperature – Data Erratic, Intermittent or Incorrect, at Ignition ON
- PACCAR Fault Code P0197 — Engine Oil Temperature – Voltage Too Low or Short Circuit to Ground on ECU (D420) Pin (C16)
- PACCAR Fault Code P0198 — Engine Oil Temperature – Voltage Too High or Short Circuit to Supply on ECU (D420) Pin (C16)
- PACCAR Fault Code P0298 — Engine Oil Temperature – Data Valid But Too High
- PACCAR Fault Code P1298 — Engine Oil Temperature – Data Valid But Too High, Moderately Severe
- PACCAR Fault Code P1571 — Engine Oil Temperature – Data Erratic, Intermittent, or Incorrect
- PACCAR Fault Code P0298 — Engine Oil Temperature – Data Valid But Too High, Most Severe
- Cummins Fault Code 212 — Engine Oil Temperature Sensor Circuit - shorted high
Source: PACCAR MX-13 2017–2020 fault code list (Diesel Laptops). See also OBD-II codes.