What causes B1601 on a Ford?

Wrong or unprogrammed key used in the ignition Weak key transponder signal from a damaged key Multiple PATS keys on the same key ring interfering Transceiver ring partially reading the key PATS module memory fault

How do I fix B1601 on a Ford?

Use each available key separately with no other transponder keys nearby Inspect keys for physical damage to the transponder area Attempt the Ford 10-minute key programming procedure where applicable Check transceiver ring seating around the ignition cylinder Program new keys with Ford-capable equipment if none are accepted

B1601 PATS Received Incorrect Key Code From Ignition Key Transponder

Q: What does B1601 mean on a Ford?

B1601 — PATS Received Incorrect Key Code From Ignition Key Transponder. Applies to F-150, Mustang, Explorer, Ranger, Focus with PATS anti-theft.

Category: Body
Severity: Check Engine Light
Applies to: F-150, Mustang, Explorer, Ranger, Focus with PATS anti-theft

What does B1601 mean on a Ford?

B1601 — PATS Received Incorrect Key Code From Ignition Key Transponder. This Ford-enhanced code applies to F-150, Mustang, Explorer, Ranger, Focus with PATS anti-theft.

Common causes of B1601

Wrong or unprogrammed key used in the ignition
Weak key transponder signal from a damaged key
Multiple PATS keys on the same key ring interfering
Transceiver ring partially reading the key
PATS module memory fault

How to fix B1601

Use each available key separately with no other transponder keys nearby
Inspect keys for physical damage to the transponder area
Attempt the Ford 10-minute key programming procedure where applicable
Check transceiver ring seating around the ignition cylinder
Program new keys with Ford-capable equipment if none are accepted