P0057 on 2013-2016 Jaguar XJ: HO2S Heater Circuit Low Causes and Fixes

What's Unique About the 2013-2016 Jaguar XJ

For the 2013-2016 Jaguar XJ (X351 generation), the P0057 code is part of a larger group of oxygen sensor codes that Jaguar has addressed in Technical Service Bulletins (TSBs). TSB JTB-00392-NAS-3 explicitly states that these codes can be caused by a software error. The recommended action, after confirming no hardware fault exists, is to reflash the Powertrain Control Module (PCM) with updated software. Another TSB, SSM72477, notes that diagnosis may find no fault with the sensor or wiring, reinforcing the possibility of a software-related or intermittent issue. This makes it critical for Jaguar owners to consider a software update as a potential fix, a step not common for this code on many other vehicles.

Diagnostic Flowchart

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

Symptoms You May Notice

• Check Engine Light is illuminated.
• Failure of a vehicle emissions test.
🎬 Watch: Overview of P0057 causes and common fixes
• A minor decrease in fuel economy may occur over time, but is often not noticeable.
• In rare cases, prolonged operation in a rich condition could lead to catalytic converter overheating.

Most Likely Causes

1. Failed Bank 2, Sensor 2 Oxygen Sensor 🔴 High Probability → Shop Oxygen Sensor Oxygen sensors are wear-and-tear items operating in a harsh exhaust environment. The internal heater element is a common failure point, sometimes due to thermal shock from water contact.
   How to confirm: Using a multimeter, disconnect the sensor and measure the resistance across the two heater circuit pins (usually the two wires of the same color). A good sensor will typically have a resistance between 2 and 30 ohms, though some sources suggest a tighter range of around 8-10 ohms. An open circuit (infinite resistance) or a reading far outside this range indicates a failed heater element.
   Typical fix: Replace the Bank 2, Sensor 2 oxygen sensor. An O2 sensor socket is often required for removal. 🎬 See how to test and fix the heater control circuit
   Est. part cost: $75-$280
2. Wiring or Connector Issue 🟡 Medium Probability The sensor wiring is routed under the vehicle and is exposed to heat from the exhaust, moisture, and potential physical damage. Wires can melt, chafe, or corrode at the connector pins.
   How to confirm: Visually inspect the wiring harness and connector for any signs of melting, chafing, or corrosion. With the ignition on (engine off), use a multimeter to check for battery voltage (approx. 12V) at the heater power supply wire on the harness-side connector. Check for continuity to ground on the ground wire.
   Typical fix: Repair the damaged section of the wiring harness or clean/replace the connector. Applying dielectric grease during reassembly can prevent future corrosion.
   Est. part cost: $10-$100
3. Blown Fuse ⚪ Low Probability
   How to confirm: While some vehicles have a specific fuse for O2 sensor heaters, Jaguar wiring diagrams for this platform suggest the heater circuit may be powered directly by a relay (like the fuel pump relay) rather than a dedicated fuse. Check the Engine Compartment Fuse Box for related fuses, such as 'Engine management sensors' (Fuse F2 in some diagrams), though a blown fuse is less likely to be the root cause for a single sensor fault.
   Typical fix: Replace the blown fuse. If the fuse blows again, it indicates a short circuit in the wiring or the sensor that must be diagnosed.
   Est. part cost: $1-$5

Rare But Worth Checking

• Engine Control Module (ECM/PCM) Fault or Software Error: → Shop Engine Control Module (ECM) This is a notable cause for this specific Jaguar platform. TSB JTB-00392-NAS-3 directly attributes this and other HO2S codes to a potential software error. If the sensor and wiring test correctly, the fix is to have a dealer reflash the PCM with updated software. In very rare cases, the ECM's internal driver circuit for the heater can fail, requiring ECM repair or replacement.

Diagnosis Steps

1. Scan the vehicle for any other stored trouble codes. Address other codes first if they are present.
2. Visually inspect the wiring harness and connector for the Bank 2, Sensor 2 oxygen sensor. Look for any signs of damage, melting, or corrosion, paying close attention to where the harness is routed near the exhaust.
3. Check fuses in the engine compartment fuse box that are related to engine management or emissions components.
4. If the wiring and fuses are intact, disconnect the oxygen sensor connector.
5. With the ignition on (engine off), use a multimeter to verify there is battery voltage (approx. 12V) and a good ground signal being supplied to the sensor's heater circuit at the vehicle-side connector.
6. Using the multimeter set to Ohms, measure the resistance of the heater element across the two same-colored wires on the sensor itself. A reading between 2-30 Ohms is expected. An infinite reading means the heater is burned out.
7. If the sensor's resistance is within spec and the wiring provides proper power and ground, the issue may be intermittent or related to the ECM software. Consult TSB JTB-00392-NAS-3, which suggests a PCM software update may be the required fix.

Parts You'll Likely Need

• Heated Oxygen Sensor (Bank 2, Sensor 2) (OEM #T2H48050) — This is the most common failure point for a P0057 code. The internal heater element burns out over time. This part number supersedes previous numbers C2D23702 and C2D54166.
  Trusted brands: Jaguar (OEM), Bosch, Denso, NTK
  OEM price range: $280-$345
  Aftermarket price range: $75-$150

Technical Service Bulletins (TSBs) & Recalls

• SSM72477: Notes that for a list of HO2S codes including P0057, diagnosis may find no fault with the component, suggesting an intermittent or software-related trigger.
• JTB-00392-NAS-3: Service bulletin for 2013-2015 models that identifies a 'software error' as a possible cause for P0057 and a list of other HO2S codes. The prescribed action, if hardware is good, is to reflash the PCM.
• JTB00392NAS1: An earlier version of the service bulletin also addressing a range of HO2S codes, including P0057.

Platform-Specific Known Issues

• Jaguar has issued Technical Service Bulletins (TSBs) #SSM72477, #JTB-00392-NAS-3, and #JTB00392NAS1 that include code P0057 among a large list of other HO2S codes. TSB #SSM72477 specifically notes that upon diagnosis, sometimes 'NO FAULT IS FOUND'. This suggests the code can be set intermittently or due to a software anomaly.
• TSB #JTB-00392-NAS-3 for 2013-2015 models explicitly states the cause may be a 'post-catalyst heated oxygen sensor (HO2S) software error' and the action is to 'Configure existing module - Powertrain control module' after verifying the hardware is functional.
• A user on JaguarForums.com with code P0057 on an XK noted the code returned immediately after clearing until the sensor was replaced, indicating a hard fault with the heater circuit.
🎬 Watch: Jaguar oxygen sensor location and replacement walkthrough