Pinpoint Test Aa : DTC P1636, P163E, P163F
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Normal Operation and Fault Conditions
The TCM stores the transmission identification information. If the transmission identification is incorrect or is not programmed, a DTC sets.
DTC Fault Trigger Conditions
DTC Description Fault Trigger Condition TCM P1636:00 Inductive Signature Chip Communication Error: No Sub Type Information This DTC indicates an internal TCM loss of communication with the low side solenoid drivers. When communication is lost, the solenoid states become unknown, so the TCM opens the high side of the circuit, releasing all clutches. Only neutral is available with the TCC released and maximum line pressure. TCM P163E:00 Transmission Control Module Programming Error: No Sub Type Information This DTC indicates the transmission identification does not match the version stored in the TCM calibration. TCM P163F:00 Transmission ID Block Corrupted, Not Programmed: No Sub Type Information This DTC indicates the transmission identification is not programmed in the TCM calibration. Possible Sources
- Incorrect or corrupted TCM calibration.
- AA1 UPDATE THE TCM (TRANSMISSION CONTROL MODULE) CALIBRATION AND TRANSMISSION STRATEGY
- Ignition ON.
- Using a diagnostic scan tool, clear the diagnostic trouble codes (DTCs) from the TCM.
- Program the TCM with the latest calibration. REFER to: Module Programming .
- Carry out the transmission strategy download. REFER to: Transmission Strategy Download .
- Road test the vehicle.
- Using a diagnostic scan tool, carry out the TCM self-test.
Is DTC P1636, P163E or P163F present in the TCM?
Yes INSTALL a new TCM. REFER to: Transmission Control Module (TCM) . CARRY OUT the transmission strategy download. REFER to: Transmission Strategy Download . No The fault is not present at this time. It might have been caused by an incorrect or corrupted calibration.