Code Definition

P1188 — Calibration Memory

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Ford

About P1188

P1188 is a manufacturer-specific powertrain diagnostic trouble code recorded for Ford vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1188 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

The Engine Control Module (ECM) continuously monitors the integrity of its internal calibration memory, which stores the engine management maps, fuelling and timing tables, and operating parameters the module relies on to run the engine. DTC P1188 is set when the ECM detects corrupted, missing, or unreadable calibration data during its internal self checks or while executing control functions. This fault typically points to a module that has lost or partially lost its programming, a failed or interrupted software update, or an internal memory hardware failure within the ECM. Low or unstable ba...

Join TaT to view the complete code information and diagnostic details.

Quick Facts