P0942 on Fiat
Hydraulic Pressure Unit Loss of Pressure
P0942 on Fiat vehicles indicates hydraulic pressure unit loss of pressure. Au7o has documented this code across 1 Fiat model — most commonly on Uno. P0942 indicates the powertrain control module has detected a loss of hydraulic pressure in the transmission's hydraulic pressure unit/circuit. The hydraulic system controls clutch and band apply pressures needed for proper gear engagement, and insufficient pressure can cause harsh shifts, slipping, or failure to shift. Typical repair costs on Fiat range from $350 to $1,200, depending on the specific model and root cause.
Common Causes of P0942
- •Low or degraded transmission fluid (incorrect level, contamination, or wrong fluid type)
- •Faulty or stuck hydraulic pressure control solenoid
- •Failing transmission oil pump producing insufficient pressure
- •Internal hydraulic leaks (worn seals, valve body, or gaskets)
- •Clogged transmission filter restricting fluid flow
- •Wiring or connector faults in the pressure control circuit
P0942 on Fiat by Model
Fiat Uno(1 issue)
- Dualogic/GSR Automated Manual Transmission Faults and Neutral Drop-Out (Including 2019 Recall)2011-2019
The single-clutch automated manual offered on the Novo Uno (Dualogic on the 1.4 Fire Evo, GSR on the 1.3 Firefly 'Uno Drive') is the model's most expensive weak point. Chronic failure modes documented by Brazilian transmission specialists include worn or mis-calibrated clutch actuators causing slipping and jerky engagement, hydraulic pressure loss from leaks (pump shuts down, codes P0942/P2712), failed gear/clutch position sensors (P0805/P0806, P0715/P0725) and TCU faults that force the transmission into emergency mode or drop it into neutral while driving. It became serious enough that in 2019 Fiat recalled 11,669 vehicles across 8 models — including 916 Uno 1.3 GSR units, model years 2017-2018 (chassis 796635 to 835113) — because the transmission could shift to neutral involuntarily, causing sudden loss of drive.
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View P0942 across all makes →Frequently Asked Questions
What does P0942 mean on Fiat?▼
P0942 stands for "Hydraulic Pressure Unit Loss of Pressure." P0942 indicates the powertrain control module has detected a loss of hydraulic pressure in the transmission's hydraulic pressure unit/circuit. The hydraulic system controls clutch and band apply pressures needed for proper gear engagement, and insufficient pressure can cause harsh shifts, slipping, or failure to shift. On Fiat specifically, this code is documented across 1 model.
What causes P0942 on Fiat vehicles?▼
Common causes on Fiat: Low or degraded transmission fluid (incorrect level, contamination, or wrong fluid type), Faulty or stuck hydraulic pressure control solenoid, Failing transmission oil pump producing insufficient pressure, Internal hydraulic leaks (worn seals, valve body, or gaskets), Clogged transmission filter restricting fluid flow. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0942 on a Fiat?▼
Repair costs on Fiat range from $350 to $1,200, depending on the specific model and root cause.
Which Fiat models have P0942 documented?▼
Au7o has documented P0942 on 1 Fiat model: Uno.