What does GMC P1895 mean?

GMC code P1895: TCM To ECM Torque Reduction Circuit. It relates to the powertrain on GMC vehicles.

Can P1895 be turned off in the ECU?

DTC removal is possible for off-road/motorsport use after the underlying fault or hardware change (e.g. DPF/EGR removal). Safety-critical codes should be fixed, not suppressed.

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GMC • powertrain

GMC P1895

TCM To ECM Torque Reduction Circuit

What P1895 means on a GMC

On GMC vehicles, P1895 is logged when the ECU detects a fault in the powertrain: “TCM To ECM Torque Reduction Circuit”. P1895 is a manufacturer-specific GMC code (the "1" after the letter marks an OEM-defined code), so its meaning applies to GMC and may differ on other makes.

Common causes & symptoms

Typical triggers for a powertrain code like P1895 include faulty or ageing sensors, wiring/connector faults, a clogged or removed component, or a value drifting outside the ECU's expected window. Symptoms range from a check-engine light only, to limp mode, rough running, higher consumption or failed emissions tests.

P1895 and ECU tuning

When a GMC has had hardware changed for off-road/motorsport use (for example a removed DPF or EGR), the related monitor must be disabled in the ECU map or the code re-appears. Softechpro Solutions performs DPF/EGR/AdBlue/DTC off and recalculates the checksum, so codes like P1895 stay cleared after the flash. Genuine faults should always be repaired, not just hidden.

Related GMC codes

P1891 P1892 P1893 P1894

Need to clear P1895 after a delete?

Softechpro Solutions does DPF/EGR/AdBlue/DTC off + checksum for 260+ ECU families — from €98.99/mo.

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