Tech live look information bulletin for how to use fronline.io on mobile devices and tablets.
full bulletin at NHTSA ↗2020 Porsche Taycan electrical problems
moderate 43 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Complaints
43
Recalls
0
Avg fix
$850
1fire
When does it fail?
Of the 43 electrical complaints filed for the 2020 Porsche Taycan, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 5 model years of Porsche Taycan we track for electrical problems, this one carries the most owner complaints on file — 43.
Electrical accounts for 48% of every owner complaint on file for this vehicle — the dominant problem area across 5 categories tracked.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Tech live look information bulletin for How to use Frontline.io on the HoloLens 2
full bulletin at NHTSA ↗Technical information for Warning Message "Vehicle Electrical System Faulty" in Conjunction With Fault Memory Entry "Cell Module X, Ageing Detected" in the High-Voltage Battery Control Unit - BMC
full bulletin at NHTSA ↗Technical information for Various Complaints About the Central Computer (PCM) Regarding System Stability, Navigation Operation and Charge Planning
full bulletin at NHTSA ↗Technical information for Warning Message "Vehicle Electrical System Faulty" in Conjunction With Fault Memory Entry "Cell Module X, Ageing Detected" in the High-Voltage Battery Control Unit - BMC
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The most common failure is sudden, complete loss of motive power during normal driving. Vehicle goes dark at speeds from 30 to 70 mph—no warning lights beforehand—and either loses acceleration entirely or emergency-brakes to a stop mid-traffic. Drivers report the "Engine Control Error" or "Electrical System Error" message appears only *after* the shutdown, leaving no time to react or steer to safety.
Owners describe their cars becoming immobilized in intersection, unable to shift into drive or reverse, while traffic piles up behind them. Several had the vehicle towed and discovered the 12-volt battery completely drained. Others needed the high-voltage battery module, battery controller, or entire power control module replaced—with dealers citing $17,000 repair bills. Porsche's software updates and module swaps haven't held; owners report the same failures happening days or weeks after dealer "repairs."
A recurring secondary problem: the instrument cluster goes dark for 20–30 seconds during highway driving, then reboots. One owner's Taycan caught fire while parked during a charging session. Brake hose recalls are also outstanding with parts on backorder.
Dealers acknowledge they're aware of the defect but have no permanent fix ready. Multiple owners requested lemon law buy-back; Porsche offered partial coverage in some cases but declined full responsibility in others. The root cause remains unidentified after 43 separate complaints.
Same Porsche Taycan electrical reports on nearby years: 2021 · 2022
Failure modes owners describe
Sudden Power Loss / Engine Control Error
Vehicle loses all motive power during driving without warning, displaying 'Engine Control Error' or 'Electrical System Error' message. Occurs unpredictably at highway or city speeds. Vehicle becomes immobilized mid-traffic, creating severe collision hazard.
When: Various speeds (30–70 mph); timing unpredictable; some owners report recurrence after dealer repair attempts
Symptoms owners cite: Complete loss of forward motion and acceleration; Vehicle shakes or jerks before shutdown; Emergency braking without driver input; Unresponsive throttle/accelerator pedal; Red warning light illuminates only after power loss (no advance notice); Instrument cluster may go dark or reboot; Vehicle requires restart to regain function
Codes mentioned: Engine Control Error, Electrical System Error, Motor Control Error, All Wheel Drive Error
Repairs/costs cited: Porsche dealerships have attempted software updates and control module replacements; owners report failures persist after repair. Some dealers report no fix available. One owner cited $17k bill for high-voltage battery controller and booster replacement.
Recalls/TSBs owners mention: Porsche acknowledged awareness of issue (per multiple owner statements); software updates issued; control modules replaced; partial coverage offered in some cases; related to NHTSA Campaign 24V732000 (Electrical System recall).
12-Volt Battery Drain / Depletion
12-volt auxiliary battery drains unexpectedly, rendering the vehicle unable to start or operate any electrical systems. Vehicle becomes a dead weight that cannot be moved without external charge.
When: Both while parked and during/after charging cycles; reported multiple times within first four months of ownership
Symptoms owners cite: Vehicle will not power on; All electrical systems unresponsive; Cannot shift out of park without external 12V charge; Vehicle requires tow truck after 12V depletion; Recurs without clear trigger
Codes mentioned: Battery requires service (yellow warning light)
Repairs/costs cited: 12-volt battery replacement; parts on backorder in some cases. Owners report multiple failures requiring repeated dealer visits.
Recalls/TSBs owners mention: Service bulletin issued (per one complaint); manufacturer awareness documented; parts availability constrained.
High-Voltage Battery / Charging System Failure
High-voltage main battery or associated charging electronics fail, typically triggered during DC fast charging at third-party chargers. Multiple fault codes logged; HV battery controller and booster may require replacement.
When: During or immediately after DC fast charging; mileage varies
Symptoms owners cite: Battery fault errors displayed; Vehicle immobilization; Message 'battery requires immediate service'; Charger difficult to disconnect; Loss of drive capability
Codes mentioned: B192BF0 - High-voltage DC charger (booster) in wrong mode, P33E500 - Quick battery charging (DC), Charge station initialization error, U15AB00 - Quick battery charging (DC), Communication error between vehicle and charging station, U15AE00 - Quick battery charging (DC), Charging station communication failure, U15B300 - Fast battery charge (DC) cable testing error, P33F000 - High-voltage system activation malfunction, B200000 - Control unit function restriction, U140900 - Internal temperature measurement implausible signal, B1A88F0 - Charge port door actuator travel error, U15AC00 - Signal damping log malfunction
Repairs/costs cited: HV battery module replacement; HV battery controller replacement; high-voltage booster replacement. One owner reported $17k repair bill; Porsche initially declined warranty responsibility.
Recalls/TSBs owners mention: No initial manufacturer responsibility claimed in charging-related failure; APB6 recall issued directing owners to stop using OEM charger and offering reimbursement for aftermarket chargers (reimbursement delays reported). Recall 24V732000 also relevant.
Gateway / Power Control Module Failure
Power control unit (PCM) or gateway module malfunction causes loss of vehicle responsiveness, multiple warning lights, and inability to accelerate despite pedal input. Some owners report multiple PCM replacements within short timeframe.
When: Various; one instance at 15,000 miles; multiple occurrences within 2 years of ownership
Symptoms owners cite: Power steering failure; Multiple warning lights illuminated simultaneously; Vehicle decelerates independently; Accelerator pedal unresponsive despite depression; Engine performance limited message
Codes mentioned: Motor Control Error, Visit Workshop message, Engine performance limited
Repairs/costs cited: Gateway control unit replacement (one confirmed repair). One owner reported entire PCM replacement, followed by recurring failures.
Recalls/TSBs owners mention: Manufacturer informed in at least one case; repair performed.
Instrument Cluster / Display Blackout
Instrument cluster and all gauges go blank temporarily during driving, then reboot. Creates safety concern due to loss of vehicle telemetry during operation. Occurs intermittently.
When: During normal highway driving; lasts 20–30 seconds per reports
Symptoms owners cite: All dashboard displays go dark; Gauges disappear from view; Systems reboot after 20–30 seconds; Occurs multiple times over vehicle ownership
Repairs/costs cited: Dealers have characterized as 'normal,' no specific repair documented.
Recalls/TSBs owners mention: Dealers claim behavior is normal; no recall or TSB referenced.
Vehicle Fire (Charging-Related)
Vehicle caught fire while parked and being serviced. Fire started during or shortly after charging session. Severe safety and property damage risk.
When: While vehicle was parked and undergoing exterior detailing; timing relative to charging unclear
Symptoms owners cite: Loud explosion heard; Vehicle engulfed in flames; Fire spread to property
Repairs/costs cited: Vehicle total loss.
Recalls/TSBs owners mention: Not documented; police and fire dispatch called.
Brake System / Emergency Braking Malfunction
Vehicle applies brakes unexpectedly and with force during electrical failures, sometimes simultaneously with power loss. Brake hose recall noted in one complaint; one owner reported pedal going to floor with harsh sound.
When: During electrical shutdown events; one brake issue within 2 years of purchase
Symptoms owners cite: Sudden, hard emergency braking without driver input; Brake pedal unresponsive or goes to floor; Vehicle stops abruptly in traffic; Brake hose deterioration (recall-related)
Repairs/costs cited: Brake hose replacement (parts on backorder per one complaint); brake system diagnostics inconclusive in some cases.
Recalls/TSBs owners mention: NHTSA Campaign for brake hose issued; parts backorder noted; Porsche issued STOP order to dealers regarding affected vehicles and use as loaners.
'Turtle Mode' / Severe Power Limitation
Vehicle enters limp mode restricting speed to 20 mph or lower, rendering it functionally undrivable on highways. Occurs unpredictably; persists after multiple dealer visits.
When: Recurred three times within one month period
Symptoms owners cite: All-wheel drive error message; Engine performance limited message; Maximum speed capped at 20 mph; Vehicle sluggish and unresponsive
Codes mentioned: All Wheel Drive Error, Engine Performance Limited
Repairs/costs cited: Dealership visits did not resolve recurring issue.
Recalls/TSBs owners mention: No specific fix identified by dealer.
Synthesized from 43 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 11 most recent
On two different occasions the car had catastrophic failures due to the 12 v battery draining for no reason. And one occasion the car had a catastrophic failure due to the main battery system having a failure. All of this happened in the first four months of ownership. All times the vehicle with stationary.
Car displayed the following message: Electrical system error Park vehicle in a safe place
The vehicle experiences a sudden and dangerous malfunction while driving. Without any prior warning, the vehicle begins to shake and then immediately brakes on its own, coming to an abrupt stop in the middle of traffic. Only after the vehicle has already braked and shut down does an “Engine Control Error” message appear on the display. There is no advance alert and no time for the driver to react…
I was trying to leave a parking spot. I put the car in drive mode & it didn't move. The vehicle showed the message: 'motor control error ' move vehicle to a safe place' and was encircled by a red light. I turned the car off and on several times thinking vehicle would reset itself. But vehicle would not move. The car would go in neutral mode, but not drive mode.
While driving, car began to shake abruptly and stopped itself. Dash flashed motor control error in red and the system control error and was complete unresponsive and undriveable. Car was towed to Porsche and they have no answers after 3 days. This was very dangerous, as the car slammed on the breaks and stopped in the middle of the road. Had it been a highway, I could have been hit.
The car once I started, it gave us a red warning that said electrical system problem. At that point, I was unable to put the car in drive or put the car in reverse. The only thing I was able to do is put the car in neutral. The car would not move. The same issue happened when I was driving with the car. It gave me the error message at which point I had to pull over on the shoulder.
The contact owns a 2020 Porsche Taycan. The contact received notification of NHTSA Campaign Number: 24V732000 (Electrical System) after owning the vehicle for a week. The vehicle was taken to the dealer, who then stated that because the vehicle had an aftermarket charger inside, the repair could not be performed unless a charger was purchased from the dealer. The dealer confirmed that the…
The contact owns a 2020 Porsche Taycan. The contact stated that while driving at an undisclosed speed, the vehicle lost electrical power and stalled. The contact stated that he was able to veer to the side of the road. The contact was able to restart the vehicle; however, the failure recurred while driving. The contact stated that while making a right turn, the instrument cluster became…
Porsche Taycan has been plagued with recurrent electrical issues despite 2 factory recall messages and reported fixes. The car screen and gauges all blacked out while driving despite reportedly fixing this electrical problem. Further a serious brake issue occurred (pedal going all the way down making harsh sound) within 2 years. If that’s not enough the car had an “serious electrical system”…
Taycan HV battery cells/modules going bad causing the car to be a brick and not drivable and dangerous. Porsche is replacing the failed cells but it can be an ongoing issues that can spread to other cells.
Had electrical trouble with your 2020 Porsche Taycan?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2020 Porsche Taycan?
It's a documented issue but not catastrophic. 43 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Based on the 43 complaints filed, electrical issues most often appear around 7,183 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2020/Porsche/Taycan.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.