B1412 on 2014-2018 Jaguar F-TYPE: The 'Do Nothing' Ghost Code Explained

What's Unique About the 2014-2018 Jaguar F-TYPE

The Jaguar F-TYPE, along with other JLR models from the same era, has a known software anomaly that generates this specific 'ghost' code. The manufacturer, Jaguar Land Rover, issued Technical Service Bulletin SSM72302 explicitly instructing technicians to ignore this code and not replace any parts in response to it. The TSB states, "This will not affect the vehicle performance and is not visible to the customer." This is unusual because a diagnostic trouble code typically points to a tangible problem, but in this case, it's a known, benign software bug. Despite the TSB being issued as early as 2015, the cause remains listed as "Under Investigation," and no software update has been provided to fix it.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this vehicle.

Most Likely Causes

1. Gateway Module (GWM) Software Glitch 🔴 High Probability This is a well-documented issue across multiple Jaguar and Land Rover models of this era, as confirmed by manufacturer TSBs SSM72302 and SSM72286.
   How to confirm: The presence of code B1412 with a '-96' suffix in the Gateway Module is the primary confirmation. Use a JLR-specific diagnostic tool like SDD or Pathfinder for accurate reading. The code cannot be cleared, even with advanced tools, and no other symptoms should be present.
   Typical fix: No fix is required or available. Per Jaguar's TSB SSM72302, the code must be ignored. Replacing parts will not resolve the presence of this specific code. The TSB explicitly warns: "Do not replace the Gateway Module for this DTC. Do not replace the Quiescent Relay Box for this DTC."
   Est. part cost: $0

Diagnosis Steps

1. Scan the vehicle's modules with a high-end diagnostic tool capable of reading manufacturer-specific codes, preferably a JLR-specific tool like SDD or Pathfinder.
2. Confirm the presence of code B1412-96 in the Gateway Module (GWM). Note the '-96' suffix, which is critical to this diagnosis.
3. Verify that there are no other related symptoms or trouble codes. If other electrical issues or a battery drain are present, they must be diagnosed as a separate problem.
4. Reference Jaguar TSB SSM72302 or Land Rover TSB SSM72286. The text states: "False log of DTC 1412-96 in the Gateway Module and will not clear due to internal software issues. This will not affect the vehicle performance and is not visible to the customer."
5. Ignore the code and do not replace any parts. The code will persist even after clearing attempts, which is the expected behavior for this specific glitch.

Technical Service Bulletins (TSBs) & Recalls

• SSM72302: States that B1412-96 is a false DTC logged in the Gateway Module due to a software issue and that no parts should be replaced. It applies to F-Type (X152), XJ (X351), XE (X760), and XF (X260) models. The bulletin confirms the code will not clear and does not affect vehicle performance.
• SSM72286: The Land Rover equivalent of the above TSB, applying to models like the Range Rover (L405), Evoque (L538), and Discovery Sport (L550). It contains the same instructions to ignore the code and not replace the GWM or Quiescent Relay Box.

Platform-Specific Known Issues

• Jaguar has explicitly stated via TSB SSM72302 that B1412-96 is a false error due to a software glitch in the Gateway Module. This issue is not unique to the F-TYPE and also affects the XJ, XE, and XF models from the same period. A similar TSB (SSM72286) exists for Land Rover models, indicating a widespread JLR software issue that was never resolved with an update.

Mechanic-Grade Diagnostic Values

• Quiescent Battery Drain — expected: Should not exceed 35 mA after the initial shutdown period (up to 40 minutes).. Failure: A sustained reading significantly higher than 35 mA (e.g., 800 mA as reported by one owner) indicates a parasitic draw from a component other than the B1412-96 glitch. 🎬 See how to perform a professional parasitic drain test on a Jaguar. This requires a separate diagnosis by pulling fuses to isolate the problematic circuit.

Hidden / Shadow Codes Worth Checking

• B1412-87: Quiescent Relay Box - Missing message. Unlike the benign B1412-96, this code indicates a genuine communication failure on the LIN bus between the Gateway Module (GWM) and the Quiescent Current Control Module (QCCM). This often manifests as a real battery drain because the vehicle fails to go to sleep properly. (see via JLR-specific diagnostic tools like SDD or Pathfinder are required to read manufacturer-specific DTCs with suffixes.)

Scan Tool Commands That Help

• JLR SDD / Pathfinder: Read DTCs from Gateway Module (GWM) — This is the primary step to confirm if the code is B1412-96 (ignore) or a different suffix like B1412-87 (diagnose). The software can also be used to clear codes after a repair for a B1412-87, or to attempt to clear B1412-96 and confirm that it cannot be erased.
• JLR SDD / Pathfinder: Module Replacement/Programming — If diagnosing a B1412-87 code leads to replacing the Gateway Module, the dealer-level software is required to configure the new module to the vehicle. This is explicitly NOT needed for the B1412-96 ghost code.

Wiring & Ground Locations

• Gateway Module (GWM) — On the F-Type, the GWM is located in the passenger compartment, on the right-side 'A' pillar, below the fascia. On some other Jaguar models like the XF, it is located in the trunk (rear dick) area.. While the B1412-96 code is a software issue within the module, a technician investigating other electrical gremlins or the more serious B1412-87 code would need to access the GWM to check its connections and the associated LIN bus wiring.
• Quiescent Relay Box / Rear Junction Box — The Quiescent Relay is integrated into the Rear Junction Box (part C2D23644), which is located in the trunk/luggage compartment near the battery. It is often described as the luggage compartment upper fuse box.. 🎬 Watch: A quick guide to finding all Jaguar F-Type fuse box locations. This is the component that the B1412 code refers to. 🎬 Watch: Understanding the Quiescent Relay Box and this specific code. While it should not be replaced for the -96 suffix, its location is critical for diagnosing a real battery drain or a B1412-87 'missing message' code, which could be caused by a faulty relay in this box or a wiring issue leading to it.
• Battery Ground Point — The main battery negative cable grounds to the chassis in the trunk, near the battery itself.. Although unrelated to the B1412-96 software glitch, checking that the main battery ground is clean and tight is a fundamental first step when diagnosing any electrical issue, especially a no-crank or battery drain symptom that might occur concurrently.
• LIN Bus 1 Circuit — This is the Local Interconnect Network wiring that runs between the Gateway Module (GWM) and the Quiescent Current Control Module (QCCM), among other modules.. For a B1412-87 'missing message' code, Jaguar's diagnostic procedure is to check the LIN bus 1 circuit for a short to ground, short to power, open circuit, or high resistance. This is a wiring check, not a parts replacement step.

Real Owner Repair Stories

• JaguarForums.com user 'DanL' and thread contributors (2016 Jaguar F-Type R Convertible) — Persistent battery drain (4.5V after 3 days), 'Charging System Fault' message, hazard light staying on for over 30 minutes after shutdown, and clicking noises near the battery.
  ❌ Tried (didn't work) Resetting the Battery Monitoring System (BMS) and registering the battery., Initially replacing the BMS sensor with a non-OEM part.
  ✅ What actually fixed it The root cause was identified as code B1412-87 (Quiescent Relay Box - Missing message), NOT the B1412-96 ghost code. The diagnostic advice was to check the LIN bus 1 circuit for wiring faults, as the previously damaged BMS sensor also communicates on that same bus. The ultimate fix pointed towards replacing the cheap aftermarket BMS sensor with a genuine OEM part (C2Z16597), as unplugging the faulty sensor made the B1412-87 code disappear and stabilized the battery voltage.

OEM Part Supersession History

• T2R10624 → T2R22006 — This is the part number for the Gateway Module (GWM). The supersession indicates a revision or update to the part.
  Heads up: While these parts may have been updated, replacement will NOT fix the B1412-96 ghost code.
• CPLA-14Q073-AA → C2D23644 — C2D23644 is the primary Jaguar part number for the Quiescent Relay Fusebox. CPLA-14Q073-AA is an engineering number also found on the part. Land Rover uses part number LR041091 for the same component.
  Heads up: This part is shared across many JLR models including the F-Type, XE, XF, and XJ. Replacement is only necessary for a confirmed hardware fault (like a sticking relay or a B1412-87 code that isn't a wiring issue), not for B1412-96.

Model Year Variations Within This Range

• 2014-2017 vs 2018+: The diagnostic software approach changes. Models from 2014 up to 2017/2018 generally use the SDD (Symptom Driven Diagnostics) software. Newer models from 2017/2018 onward, featuring the DoIP architecture, require the newer Pathfinder software. This is relevant for any technician attempting to interface with the vehicle's modules.
• 2018: For the 2018 model year, Jaguar introduced a new base engine, a 2.0L turbocharged 4-cylinder. While this does not change the nature of the B1412-96 code, it represents a significant powertrain variation within the specified vehicle range.
• 2016: AWD became an option during the 2016 model year, transitioning from the previously all-RWD lineup. This adds complexity to the overall vehicle but does not directly affect the Gateway Module's software glitch.