P0946 | P0946 Hydraulic Pump Relay Circuit Range/Performance | code p0946 | p0946 obd2

Описание: P0946 | P0946 Hydraulic Pump Relay Circuit Range/Performance | code p0946 | p0946 obd2

Hello friends welcome to the ig garage channel today I am telling you how to fix P0946 Hydraulic Pump Relay Circuit Range/Performance so watch this video and learn how to fix it friends if you like this video then subscribe to the ig garage channel for more videos.

In this video, we explain OBD-II Trouble Code P0946, which stands for “Hydraulic Pump Relay Circuit Range/Performance.”
This code appears when the TCM or PCM detects that the hydraulic pump relay circuit is operating outside the expected electrical range, causing unreliable hydraulic pump performance.

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🔍 Common Symptoms of P0946:

Check Engine Light or Transmission Warning Light ON

Intermittent or harsh gear shifting

Delayed gear engagement

Transmission slipping

Vehicle may enter limp mode

Poor acceleration

Transmission pressure faults

⚙️ Possible Causes of P0946:

Faulty hydraulic pump relay

Weak or intermittent relay operation

Low battery voltage or charging system issues

High resistance in relay wiring

Loose or corroded relay connectors

Faulty hydraulic pump

Defective TCM or PCM (rare)

🧰 How to Fix P0946:

Check battery voltage and charging system health

Inspect hydraulic pump relay operation

Test relay control and power circuits

Inspect wiring for high resistance or loose connections

Clean and secure all electrical connectors

Replace faulty hydraulic pump relay

Clear the code and perform a road test

📍 Hydraulic Pump Relay Location:

The hydraulic pump relay is typically located:

In the engine bay fuse/relay box, or

Inside the transmission control relay panel

Location varies by vehicle make and model.

💰 Estimated Repair Cost:

Battery or Charging System Repair: $100 – $400

Hydraulic Pump Relay Replacement: $50 – $150

Wiring / Connector Repair: $100 – $300

Hydraulic Pump Replacement (if required): $400 – $1,500

TCM/PCM Replacement (rare): $300 – $1,500

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🚗 Summary:

DTC P0946 indicates a range or performance issue in the hydraulic pump relay circuit, leading to unstable transmission pressure control.
Addressing electrical and relay issues early helps avoid major transmission failures.

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