What causes P1173 on a Ford?

Lost rotor calibration data Recent module replacement without calibration Corrupted keep-alive memory Low battery during a learn procedure Failing module memory

How do I fix P1173 on a Ford?

Run the rotor learn procedure with Ford equipment Maintain stable battery voltage during the learn Clear codes and verify calibration completes Check keep-alive power to the module Replace the module if calibration will not store

P1173 Rotor Calibration Fault

Q: What does P1173 mean on a Ford?

P1173 — Rotor Calibration Fault. Applies to 1990s Ford V8 models.

Category: Powertrain - Ignition
Severity: Check Engine Light
Applies to: 1990s Ford V8 models

What does P1173 mean on a Ford?

P1173 — Rotor Calibration Fault. This Ford-enhanced code applies to 1990s Ford V8 models.

Common causes of P1173

Lost rotor calibration data
Recent module replacement without calibration
Corrupted keep-alive memory
Low battery during a learn procedure
Failing module memory

How to fix P1173

Run the rotor learn procedure with Ford equipment
Maintain stable battery voltage during the learn
Clear codes and verify calibration completes
Check keep-alive power to the module
Replace the module if calibration will not store