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2022 Mirage G4 CVT Hesitation and Whining Noise

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Diana O. · rep 0 · May 22, 5:37 AM · 1 replies · solved · Question

Vehicle: 2022 Mitsubishi Mirage G4 ES

I've got a 2022 Mitsubishi Mirage G4 ES with about 30,000 miles on it, and I'm starting to get concerned about the transmission. Lately, it feels like there's a noticeable hesitation when accelerating from a stop, and sometimes it feels like the car is struggling to pick up speed, almost like it's slipping.

On top of that, I've started hearing a distinct whining noise, especially when I'm driving at highway speeds or under light acceleration. It wasn't there before, and it seems to be coming from the engine bay area. It's a constant whine, not just a momentary sound.

Could this be a common CVT issue with the Mirage G4? I'm worried about a major transmission problem, especially since the car is still relatively new. What should I do?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 5:37 AM

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ClearTheCode admin answer:

Your description of hesitation, slipping sensations, and a whining noise in your 2022 Mitsubishi Mirage G4's Continuously Variable Transmission (CVT) are classic symptoms that warrant immediate attention. CVTs, while efficient, can develop specific issues.

Potential Causes:

  1. Low or Contaminated CVT Fluid: The most common cause of CVT problems. Low fluid levels can lead to insufficient hydraulic pressure, causing slipping and hesitation. Contaminated or degraded fluid can also reduce lubrication and cooling, leading to wear and noise. Mitsubishi specifies a particular CVT fluid type and maintenance schedule.
  2. Worn CVT Belt/Pulleys: The core of a CVT is a steel belt running between two variable-width pulleys. Wear on these components can lead to slipping, hesitation, and the whining noise you're hearing as the belt struggles to grip the pulleys.
  3. Valve Body Issues: The valve body controls the hydraulic pressure within the CVT. Malfunctions here can lead to incorrect pressure application, causing shifting problems and poor performance.
  4. Torque Converter Issues: Problems with the torque converter lock-up clutch can also cause hesitation and a feeling of slipping.
  5. Diagnostic Trouble Codes (DTCs): A failing CVT will often trigger specific codes. Common ones include:
    • P0741: Torque Converter Clutch Circuit Performance or Stuck Off
    • P0776: Pressure Control Solenoid "B" Performance/Stuck Off
    • P0715: Input/Turbine Speed Sensor Circuit Malfunction
    • P0720: Output Speed Sensor Circuit Malfunction

When to See a Shop:

  • Immediately: Continuing to drive with these symptoms can exacerbate the damage and potentially lead to a complete transmission failure. It's crucial to have your vehicle inspected by a qualified mechanic or a Mitsubishi dealership as soon as possible.
  • What they will do: They will check the CVT fluid level and condition, scan for diagnostic trouble codes, and perform a road test to confirm the symptoms. Early diagnosis can sometimes prevent more extensive and costly repairs.
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