Tesla Should Recall the Cybertruck Power Conversion System (PCS)

Cybertruck owners are experiencing a growing hardware problem that prevents many from charging at home. A high failure rate of the vehicle's Power Conversion System (PCS) is disabling AC charging and exposing owners to substantial out-of-warranty repair bills.

Guys, what’s wrong with my Cybertruck?

Am I cooked??? pic.twitter.com/ksoBEGfmym

— LilHumansBigImpact (@BigImpactHumans) April 15, 2026

Even with numerous confirmed cases, identifiable diagnostic codes, and reported service center backlogs, there is still no formal NHTSA recall for the component. The risk of an unexpected failure is causing some owners to rethink trips due to the possibility of being stranded.

The Symptoms

The PCS is a core element of the Cybertruck's power electronics. It combines the On-Board Charger and the DC-DC converter into a single unit that manages all alternating-current power flowing into the battery while stepping down the high-voltage pack to power the truck's 48-volt low-voltage architecture.

Potential causes of PCS failure appear linked to failing MOSFETs or other internal parts drifting out of spec under heavy electrical loads. Failures have often been reported at very low mileage, frequently below 10,000 to 18,000 miles, and in some instances have recurred on the same vehicle even after a complete PCS replacement.

Warning signs that can precede a complete failure include:

• Sudden AC Charging Unavailable warnings on the primary display
• AC charging speeds are throttled from 48A to 24A or lower before failing completely at home chargers
• PowerShare V2L and PowerShare V2H output errors
• Diagnostics codes in Service mode related to the PCS, including PCS2_a094, PCS2_a095, PCS2_a137, and those related to High Voltage DC overcurrent trip failures

In many cases, the truck remains driveable and can use DC fast charging at Superchargers. However, without AC charging at home, day-to-day usability is severely impacted until significant repairs are completed.

Invasive Repairs and High Costs

Replacing a failed PCS is not a straightforward part swap. Because the unit is located deep within the vehicle, technicians must remove the tonneau cover, the bed floor, and elements of the air suspension to reach it.

Under the Basic Vehicle Limited Warranty (4 years or 50,000 miles), Tesla covers the replacement, often installing an updated hardware revision (Rev G) together with a new wiring harness.

For high-mileage vehicles already out of warranty, the expense has been considerable. Previously, an out-of-warranty PCS replacement ran between $5,000 and $7,200 for parts and labor. Tesla has recently reduced this to approximately $1,000 as a goodwill gesture, though owners are still paying for what appears to be a systemic hardware defect.

Service Centers are also contending with severe parts shortages. Pickup dates for affected trucks have slipped repeatedly, and some owners report no firm timelines for replacement units. According to one owner on social media, a Tesla service employee allegedly admitted that the first 75,000 Cybertrucks had defective PCS systems prone to failure.

Day 16
Cybertruck PCS2 failure, in for service
Started at 62% charge and is in low power mode
Now at 39% and expected 2 weeks more till parts arrive.
Who else has been waiting longer? pic.twitter.com/eOtrHztct5

— Gary - contractorsPOV⚡;ﾙ; (@contractorsPOV) April 16, 2026

The Terrestrial Armor Problem

Repairs are even more involved for trucks equipped with the Terrestrial Armor retrofit or factory package. The heavy-duty underbody shield must be completely removed and then carefully reinstalled to access the deeply buried power electronics.

According to service documentation, dealing with the Terrestrial Armor can increase the repair time to approximately eight hours of total labor. For owners outside their warranty window, this added complexity means Tesla may be charging a massive premium in pure labor hours just to access the failing component, adding significant financial sting to an already frustrating breakdown.

The Warranty Discrepancy

Tesla recently introduced a new 7-year/70,000-mile ZEV propulsion parts warranty for 2026+ model year Cybertrucks, which explicitly covers high-priced propulsion components like the PCS.

Early buyers of 2024 and 2025 Foundation Series trucks do not receive this protection retroactively. For those vehicles, the PCS is covered only under the basic vehicle warranty, which expires at 50,000 miles.

Unlike the Model S, Model 3, Model X, and Model Y, Tesla does not currently offer an Extended Service Agreement (ESA) subscription for the Cybertruck. Owners of early models are fully exposed to repair costs once they pass the 50,000-mile mark.

Where is the Recall?

Despite a clear pattern of failures across dozens of confirmed vehicles, and reports that some service centers proactively replace the PCS when trucks come in for unrelated tire or trim work, there is no official NHTSA recall or proactive owner notification specifically addressing the PCS hardware defect.

For now, early Cybertruck owners are left hoping their PCS fails within the initial 50,000-mile warranty window or lasts long enough for a broad acknowledgment and recall.