P278B – Kick Switch Circuit Range / Performance

P278B Possible Causes

  • Faulty kick switch
  • Kick switch harness is open or shorted
  • Poor electrical connection in the kick switch circuit

How to Fix Code P278B

Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P278B Meaning

The Transmission Control Module (TCM) monitors the kick switch circuit signal. The TCM sets the OBDII code when the kick switch circuit signal is outside factory specifications.

P278C – Low Kick Switch Circuit

P278C Possible Causes

  • Faulty kickdown switch
  • Kickdown switch harness is open or shorted
  • Poor electrical connection in the kickdown switch circuit

How to Fix Code P278C

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P278C Meaning

The Transmission Control Module (TCM) monitors the kickdown switch circuit signal. The TCM sets the OBDII code when the kickdown switch circuit signal is outside factory specifications.

P278D – High Kick Switch Circuit

P278D Possible Causes

  • Faulty kickdown switch
  • Kickdown switch harness is open or shorted
  • Poor electrical connection in the kickdown switch circuit

How to Fix Code P278D

Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P278D Meaning

The Transmission Control Module (TCM) monitors the kickdown switch circuit signal. The TCM sets the OBDII code when the kickdown switch circuit signal is outside factory specifications.

Nissan Partners with BYD to Cut European Emissions

Strategic Alliance to Meet EU Standards

Nissan has entered into a strategic partnership with Chinese automotive giant BYD to address stringent European Union emissions regulations. This collaboration allows Nissan to pool its CO2 emissions with BYD’s lower-emission vehicle portfolio, significantly reducing its overall carbon footprint in Europe. The move is a direct response to avoid substantial fines imposed by the EU for non-compliance with environmental targets.

Benefits of the Nissan-BYD Partnership

By combining emissions data, Nissan gains access to BYD’s advanced electric vehicle technology and cleaner fleet, which helps balance Nissan’s higher-emitting models. This synergy not only mitigates financial penalties but also accelerates Nissan’s transition toward electrification. The partnership underscores a growing trend of cross-industry alliances aimed at achieving sustainability goals without compromising market competitiveness.

Impact on Future Vehicle Development

This alliance is expected to influence Nissan’s long-term strategy, potentially leading to co-developed electric vehicles that leverage BYD’s expertise in battery technology and cost-effective production. Such innovations could result in more affordable and efficient EVs for the European market, aligning with consumer demand for eco-friendly transportation options.

European Automotive Landscape Shifts

The Nissan-BYD deal highlights how regulatory pressures are reshaping the automotive industry, encouraging traditional manufacturers to seek unconventional partnerships. It reflects a broader shift where compliance with environmental standards drives collaboration over competition, fostering a more integrated global approach to reducing transportation emissions.

P278E – Intermittent/Irregular Kick Switch Circuit

P278E Possible Causes

  • Faulty kickdown switch
  • Kickdown switch harness is open or shorted
  • Poor electrical connection in the kickdown switch circuit

How to Fix Code P278E

Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P278E Meaning

The Transmission Control Module (TCM) monitors the kickdown switch circuit signal. The TCM sets the OBDII code when the kickdown switch circuit signal is outside factory specifications.

Why Mid-Size Electric Vans Remain Elusive

The Missing Middle in Electric Commercial Vehicles

General Motors President Mark Reuss recently highlighted a significant gap in the electric vehicle market: the absence of mid-size electric vans. While compact and large electric commercial vehicles have begun to emerge, the middle segment remains largely unaddressed due to a complex interplay of technological and economic factors.

Battery Technology Limitations

The core challenge lies in current battery systems. Mid-size vans require a specific balance of capacity, weight, and cost that existing battery technology struggles to deliver. To achieve the range and payload capacity commercial operators demand, batteries would need to be disproportionately large and heavy, compromising cargo space and vehicle efficiency. Additionally, the thermal management and safety systems required for such battery packs add further complexity and expense.

Economic Viability Concerns

From a manufacturing perspective, developing a mid-size electric van presents significant economic hurdles. The research, development, and production costs for a vehicle in this category are substantial, yet the potential price point may not align with market expectations. Businesses considering fleet electrification often calculate total cost of ownership meticulously, and if the upfront investment is too high compared to the operational savings, adoption stalls. This creates a challenging business case for automakers to justify the required investment.

Market and Infrastructure Factors

Beyond the vehicle itself, the supporting ecosystem influences this gap. Charging infrastructure for commercial vehicles, particularly for businesses operating from depots or requiring mid-shift top-ups, is still developing. The diverse usage patterns of mid-size vans—from last-mile delivery to service trades—also mean a one-size-fits-all solution is difficult to engineer. Automakers are likely prioritizing segments with clearer demand and more straightforward technical solutions, leaving the more complex mid-size market for a later phase of electrification.

As battery energy density improves and costs decrease, this gap in the market is expected to close. However, for now, the mid-size electric van represents a formidable engineering and economic challenge that the industry is still working to solve.

P278F – Adaptive Learning of Clutch ‘B’ at the Limit

P278F Possible Causes

  • Low transmission fluid
  • Internal mechanical transmission failure
  • Faulty Transmission Control Module (TCM)

How to Fix Code P278F

Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check engine light on (or service engine soon warning light)

P278F Meaning

The Transmission Control Module (TCM) monitors the adaptive learning of clutch “B”. The TCM sets the OBDII code when it detects an abnormality in the adaptive learning system of clutch “B”.

P2790 – Gate Selection Steering Circuit

P2790 Possible Causes

  • Faulty range sensor
  • Faulty transmission shift lever
  • Shift lever harness is open or shorted
  • Poor electrical connection in shift lever circuit

How to Fix Code P2790

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check Engine Light illuminated (or Service Engine Soon warning light)

P2790 Meaning

The Transmission Control Module (TCM) monitors the gate select direction circuit signal. The TCM sets the OBDII code when the gate select circuit signal is outside factory specifications.

P2791 – Low Circuit Direction Selection Circuit

P2791 Possible Causes

  • Faulty range sensor
  • Faulty transmission shift lever
  • Shift lever harness is open or shorted
  • Poor electrical connection in shift lever circuit

How to Fix Code P2791

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Check engine light on (or service engine soon warning light)

P2791 Meaning

The Transmission Control Module (TCM) monitors the gate select direction circuit signal. The TCM sets the OBDII code when the gate select circuit signal is outside factory specifications.

P2795 – High Speed Gear Shift Steering Circuit

P2795 Possible Causes

  • Faulty range sensor
  • Faulty transmission shift lever
  • Shift lever harness is open or shorted
  • Poor electrical connection in shift lever circuit

How to Fix Code P2795

Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.

Possible Symptoms

Engine light on (or service engine soon warning light)

P2795 Meaning

The Transmission Control Module (TCM) monitors the gate select direction circuit signal. The TCM sets the OBDII code when the gate select circuit signal is outside factory specifications.