DTC P287C
DTC P287C: Transmission Adaptive Values Not Learned
General Description
The powertrain control module (PCM) absorbs variability of each vehicle, and to control smoothly on switching forward/reverse, starting, and automatic shifting, the valve body characteristics and shift position are learned and corrected at the factory. At the factory, shift position learning which shift fork position sensor is used, and valve body learning are done, and records to the PCM that the learning procedure were successfully done. Learnings and corrections must be done if transmission or PCM is replaced. When the learning procedure is not finished when the PCM is activated, the PCM detects a malfunction and stores a DTC.
Monitor Execution, Sequence, Duration, DTC Type, OBD Status
| Execution | Continuous |
| Sequence | None |
| Duration | 3 minutes or more |
| DTC Type | One drive cycle, MIL off, A/T gear position indicator blinks |
| OBD Status | PASSED/FAILED/NOT COMPLETED (STILL TESTING) |
Enable Conditions
| Condition | ||
|---|---|---|
| State of the engine | Running | |
[ ]: HDS Parameter
Malfunction Threshold
The valve body characteristic learning procedure and the stroke sensor learning procedure are not finished when the PCM is activated.
Possible Cause
- Transmission control system not learned
- PCM internal failure
Confirmation Procedure
With the HDS
None.
With the Driving Pattern
- Start the engine.
- Shift to P position/mode, and wait for at least 3 minutes.
Diagnosis Details
Conditions for setting the DTC
When a malfunction is detected, the A/T gear position indicator blinks and a Pending DTC, a Confirmed DTC, and the freeze data are stored in the PCM memory. The MIL does not come on.
Conditions for clearing the DTC
The A/T gear position indicator comes off by pressing the engine start/stop button to select the OFF mode. The Pending DTC, the Confirmed DTC, and the freeze data can be cleared with the scan tool Clear command or by disconnecting the battery.