P1895 BUICK, CADILLAC, CHEVROLET, GMC: ENGINE TORQUE DELIVERED CIRCUIT
POST UPDATED IN February, 2023
P1895 Code failures by brands
Description of DTC code P1895
Engine torque is the rotational force of the engine, which is always expressed at a given speed. Vehicles are more responsive when the maximum torque is developed in a low rpm range, although in many cases there are vehicles with a high voltage engine, which must be accelerated before developing the maximum torque. It should be noted that engine torque becomes more important in larger and heavier vehicles, taking into account that a small urban car moves easily with very little torque, but a larger vehicle needs much more to move.
DTC P1895 OBDII is set on Buick, Cadillac, Chevrolet, and GMC vehicles when, with the engine running or key on, the Powertrain Control Module (PCM) detects a short to ground, an open or shorted circuit to power in the circuit that controls engine torque delivery.
Symptoms of fault code P1895
- Check Engine lamp illuminates.
- Unstable vehicle operation.
Causes of OBD2 P1895
The P1895 OBD2 diagnostic code is stored for one of the following reasons:
- TCM (Transmission Control Module) wires may have been damaged.
- TCM connections may be faulty causing the short or open circuit.
- The Transmission Control Module may be damaged.
Possible solutions of the DTC code P1895
The steps to follow to correct the P1895 OBDII fault code are:
- Consult the TSB.
- Using a scanner you should check if there are additional DTCs configured that refer to more specific TCM If such codes are found, diagnose them.
- Check for damage to the wiring and connectors on the Transmission Control Module. Look for common deficiencies and if such conditions are found, proceed with corrections.
- Perform electrical checks on TCM circuits comparing actual voltages to specified voltages. If inconsistencies are found, make the appropriate adjustments.
