If your vehicle has a P1887 DTC, it means that the switch that lets the ECU know the TCC clutch/torque converter clutch is no longer engaged, is not responding properly. If this happens, the engine and transmission will not function properly together. Which means performance could suffer and safety could be affected.
How Serious is the Code?
If a P1887 diagnostic trouble code has been set, then it’s very likely that the line pressure will not be correct for the operating conditions. This means that internal damage could occur to transmission parts like the seals, solenoid’s and clutches. In addition, the torque converter clutch may not operate properly, which could negatively impact performance the engine and vehicle.
Symptoms of a P1887 include:
- Usually hard shifts
- Limp mode
- Faulty TCC release switch
- Damage to the wiring harness or connectors
How to Diagnose the Code?
In order to properly diagnose P1887 OBDII diagnostic trouble code, electrical tests will need to be performed, in order to determine if the TCC release switch has failed.
What Repairs Will Fix P1887
- Repair or replace the transmission wiring harness and/or connectors
- Replace TCC release switch