P1895 Fault Code

Honda – CVT PULLEY PRESSURE CONTROL VALVE CIRCUIT

For Honda, fault code P1895 is logged when the powertrain control module (PCM) has detected an issue with the continuously variable transmission (CVT) pulley pressure control valve circuit.

The CVT system is an automatic single-gear transmission that only a select number of models are fitted with. This typically allows for improvements in fuel consumption and ride smoothness without the need to shift gears as revolutions per minute increase.

There are only a few models that can have this fault code logged. Similarly, there are very few manufacturers that would even have their own version of this code because of the rarity of CVTs.

In most cases, this code will be caused by an electrical fault within the pulley pressure control valve circuit. These can include damaged wires and loose connections. It could also be caused by a faulty CVT pulley pressure control valve.

The pulley is a vital component in the CVT system, which means that a fault code like this can have hugely negative effects on the performance of the transmission.

It is one of the most likely components in the CVT system that will need replacing as a result of this fault code.

See generic codes: There is no generic fault code for this issue.

Dodge – TCM TO ECM TORQUE REDUCTION CIRCUIT

For Dodge and a number of General Motors offerings, fault code P1895 is logged when there is a malfunction somewhere in the torque reduction circuit between the transmission control module (TCM) and engine control module (ECM).

These two control modules need to communicate with each other to provide optimal performance from the engine and the automatic transmission. This is particularly true when shifting gears where it is necessary for there to be a reduction in engine and transmission torque.

The TCM is the onboard computer that is responsible for controlling the operations of the automatic transmission, while the ECM manages the engine.

Of course, only vehicles with an automatic transmission can be susceptible to a TCM-related fault code like this.

Faults like this can cause some noticeable driveability and performance changes. Again, these will be most noticeable during gear shifts.

A code like this will typically come with a number of other fault codes being logged. It is important for owners to address any other issue relating to the transmission, engine, or either one of these control modules first. These can include codes like P0700, P0740 to P0744.

See generic codes: There is no generic fault code for this issue.

GMC – TCM TO ECM TORQUE REDUCTION CIRCUIT

For all General Motors brands like Dodge, Jeep and GMC, fault code P1895 represents the same issue. For more information on the problem and similar generic fault codes, please see the above description for Dodge.

See generic codes: There is no generic fault code for this issue.

Jeep – TCM TO ECM TORQUE REDUCTION CIRCUIT

For all General Motors brands like Jeep, Dodge, and GMC, fault code P1895 represents the same issue. For more information on the problem and similar generic fault codes, please see the above description for Dodge.

See generic codes: There is no generic fault code for this issue.