What does code P1188 mean?

Q: What does code P1188 mean?

Calibration Memory Fault. P1188 on Ford vehicles indicates the powertrain control module (PCM) has detected a fault within its calibration memory, meaning the stored fuel and spark strategy data has failed an internal integrity check. The computer is not reporting a sensor or actuator failure; it is reporting that the calibration area of its own memory cannot be trusted to run the engine correctly.

DTC codes / Ford codes / P1188

P1188 · FordCalibration Memory Fault

P1188 on Ford vehicles indicates the powertrain control module (PCM) has detected a fault within its calibration memory, meaning the stored fuel and spark strategy data has failed an internal integrity check. The computer is not reporting a sensor or actuator failure; it is reporting that the calibration area of its own memory cannot be trusted to run the engine correctly.

SystemPowertrain

Code typeFord specific

SeverityMedium

Fix difficultyProfessional

AreaFuel and air metering

Guidance is general and written for Ford vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.