International Fault Code SPN 636 FMI 7: CMP to CKP Incorrect Reference

Code details

Manufacturer

International (Navistar)

Applies to

International MaxxForce DT (2010–2019)

Fault code

SPN 636 FMI 7

J1939 SPN

636

FMI

7 — Mechanical system not responding or out of adjustment

Truck models in source

3200, 4100, 4300, 4400, 7300, 7400, 7500, 7600, 7700, 8500, 8600, BE 200, CE Bus, CXT, DuraStar, LoneStar, MXT, ProStar, RXT, TranStar, WorkStar

What to do next

• Read active and inactive codes with the OEM service tool (Diamond Logic Builder can clear previously active codes) and note the occurrence count.
• FMI 7 tells the shop the type of failure to test for: mechanical system not responding or out of adjustment.
• Have a heavy-duty diesel technician confirm the fault against the engine or chassis service manual before replacing parts.

Related fault codes

• International Fault Code SPN 636 FMI 2 — CMP and CKP Synchronization Error
• International Fault Code SPN 636 FMI 10 — Engine Position Sensor: Abnormal Rate Of Change
• International Fault Code SPN 636 FMI 2 — Engine Position Sensor: Data Erratic, Intermittent Or Incorrect
• International Fault Code SPN 636 FMI 3 — Engine Position Sensor: Voltage Above Normal, Or Shorted To High Source
• International Fault Code SPN 636 FMI 4 — Engine Position Sensor: Voltage Below Normal, Or Shorted To Low Source
• International Fault Code SPN 636 FMI 8 — Engine Position Sensor: Abnormal Frequency Or Pulse Width Or Period