2020 Land Rover Defender: check engine light

Filed Oct 24, 2026 · Electrical, Engine · CO

On 10/22/26 me and my son were driving home from a football game. We were less than 5 minutes away when several warning lights flashed for a second. I was in the middles of an intersection when this happened. The car stopped and the engine reved. I tried to drive to the sode of the road away from traffic. The car would not go into drive, neutral, or park. Instead it put inself into reverse in the intersection. I had to hold the brake down as the car would not allow me to power off. After several minutes the car finally died. We had to have it towed to our home as it was late and dealships were closed. Gearbox malfunction light, check engine light, system malfunction, suspension warning, drive with caution lights are what appeared. This was very traumatic to me and my kiddo. Hope this doesn't happen to anyone else. We are so lucky that we wer not in any type of accident. Thornton PD did show up to help and direct traffic.

Filed Sep 11, 2026 · Electrical · 48,000 miles · TN

The contact owns a 2020 Land Rover Defender. The contact stated that while starting the vehicle, the check engine warning light illuminated. The following day, the contact’s spouse started the vehicle, and the message “High Voltage Shutdown Not Possible – Live System” was displayed. The contact stated that after an inspection, DTC: P0A7B was retrieved. The contact received notification of the federal safety agency Campaign Number: 26V248000 (Electrical System); however, the part was not yet available. The vehicle was taken to the dealer but was not diagnosed or repaired. The dealer confirmed that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The approximate failure mileage was 48,000.

Filed Aug 6, 2026 · Brakes, Engine · 40,000 miles · TX

The contact owns a 2020 Land Rover Defender. The contact stated that while operating the vehicle, the check engine warning light illuminated, and the vehicle was driving roughly. The contact stated that the vehicle hesitated while accelerating and the vehicle felt as if the brake pedal was being depressed. The vehicle was taken to the local mechanic, and the contact was informed that the coolant hose attached to the radiator and the coolant pipes needed to be replaced. The vehicle was repaired; however, the failure reoccurred approximately one month later. The front driver’s side headlight had failed and was replaced by the local dealer. The contact stated that one month later, the front passenger’s side headlight failed. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was 40,000.

Filed Jul 23, 2026 · Electrical, Transmission · GA

My 2020 Land Rover Defender 48V Mild Hybrid Electric Vehicle (MHEV) experienced a check engine light and hybrid electrical failure. Diagnostics by an authorized Jaguar Land Rover dealer confirmed code P0A1F-96 (Battery Energy Control Module / BECM internal component failure). This failure relates directly to an active, global safety recall issued by JLR (the federal safety agency Campaign 26V248 / JLR Recall D126) regarding DC-DC converter failures in MHEV vehicles. According to JLR recall documentation, a microchip failure in the DC-DC converter causes a total loss of 12V system charging, leading to electrical warnings and a sudden loss of motive power/propulsion while driving. CHRONIC CHARGING SYSTEM FAILURE: This vehicle has suffered from unresolved, long-term 12V charging system degradation caused by this MHEV subsystem defect. This chronic lack of proper charging has directly destroyed three (3) primary 12V main batteries and the emergency telematics (SOS) backup battery over a 4-year period. Replacing these auxiliary batteries failed to fix the underlying issue because the MHEV system/DC-DC converter continuously fails to maintain adequate charging across vehicle systems. This continuous voltage collapse eventually triggered the permanent BECM hardware lockout code (P0A1F-96). SAFETY HAZARD: A sudden loss of 12V system charging and subsequent loss of propulsion on public roads or at highway speeds presents a severe crash hazard to occupants and other motorists. STATUS & DEALER REFUSAL: An authorized JLR dealer confirmed code P0A1F-96 and documented "Pending Recall Campaign D126ADM2" on the official service invoice. Despite this being an acknowledged, safety-related defect in the MHEV system leading to loss of drive power, JLR North America and the dealer refuse to repair or grant goodwill coverage under the active safety recall framework, quoting over $3,400 out-of-pocket. The vehicle is available for inspection.

Filed May 9, 2022 · Electrical, Engine · MA

Engine light came on while at a stop light, engine faltered completely and car stalled. Would not restart. Shifted car into Park and tried multiple times to restart, finally got it restarted. Rolled forward per the flow of traffic and engine died again in the middle of the intersection putting me directly in harm’s way. Multiple lights including engine light and dash warnings appeared. Pictures attached. This is a major safety issue, the car died and I could not move it forward. I was almost hit and could not get the car restarted, not once but twice. I have owned the car for less than one week, and it’s been back in the shop now twice. The first time ( Wednesday) was also for electrical issues, including sensor issues.