P0057 on 2014-2016 Jaguar F-TYPE: HO2S Heater Circuit Low (B2S2) Causes and Fixes

What's Unique About the 2014-2016 Jaguar F-TYPE

For the 2014-2016 Jaguar F-TYPE, a P0057 code is not always a straightforward case of a bad sensor. Jaguar has released multiple Technical Service Bulletins (TSBs) acknowledging that this and many other oxygen sensor codes can be triggered by a software error. TSB JTB-00392-NAS-3 specifically instructs technicians that if a relevant DTC like P0057 is found, they should replace the indicated sensor first, and *then* perform a PCM software update. This suggests a two-part problem: a sensitive software calibration that may be exacerbated by an aging sensor, requiring both a hardware and software fix.

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.
• Failing an emissions test.
• Slightly decreased fuel economy (e.g., 1-3 MPG loss).
• Potentially rough idle in some cases.

Most Likely Causes

1. Failed Bank 2, Sensor 2 Oxygen Sensor 🔴 High Probability → Shop Oxygen Sensor The internal heater element is a common failure point over time and mileage, essentially burning out like a light bulb filament.
   How to confirm: Disconnect the sensor and measure the resistance across 🎬 Watch: How to test oxygen sensor heater circuits with a multimeter. the two heater circuit pins (usually the two same-colored wires). An open circuit (infinite resistance) or a dead short (near-zero resistance) indicates a failed heater element. A healthy sensor should have a resistance between 10 and 30 ohms.
   Typical fix: Replace the Bank 2, Sensor 2 oxygen sensor.
   Est. part cost: $70-$150
2. Outdated Powertrain Control Module (PCM) Software 🟡 Medium Probability → Shop Engine Control Module (ECM) Jaguar has issued TSBs (#SSM72477, #JTB-00392-NAS-3) for this issue, noting that HO2S codes can be set due to a software error. This implies the PCM's calibration for monitoring the sensor heater is overly sensitive.
   How to confirm: If the sensor and wiring have been tested and are confirmed to be good, the issue is likely software-related. A Jaguar dealership or specialist with the appropriate tools (like TOPIx or SDD) can check the current software version against available updates mentioned in the TSBs.
   Typical fix: Update the PCM software to the latest version, which may cost $120-$200 at a dealer or specialist. Note that TSB JTB-00392-NAS-3 recommends this step *after* replacing a faulty sensor if a code is present.
   Est. part cost: $0
3. Wiring or Connector Damage 🟡 Medium Probability The wiring harness for the downstream O2 sensors runs along the transmission and exhaust, making it susceptible to heat damage, melting, or chafing against chassis components.
   How to confirm: Visually inspect the wiring harness and connector for the Bank 2, Sensor 2 O2 sensor for any signs of melting, chafing, or corrosion in the pins. A multimeter can be used to check for continuity from the PCM to the sensor connector.
   Typical fix: Repair the damaged section of the wiring harness or clean/replace the connector.
   Est. part cost: $10-$50
4. Blown Fuse ⚪ Low Probability
   How to confirm: Check the fuses for the oxygen sensor heaters. For 2013-2017 F-TYPE models, this is in the engine compartment fuse box. Fuse F11 (20A) is for the left-side oxygen sensors (Bank 2), and F12 (20A) is for the right-side (Bank 1).
   Typical fix: Replace the blown fuse with one of the same amperage.
   Est. part cost: $1-$5

Rare But Worth Checking

• Failed Powertrain Control Module (PCM): → Shop Engine Control Module (ECM) This is an extremely rare cause. The internal driver circuit in the PCM that controls the sensor heater can fail, but all other possibilities should be exhausted before considering PCM replacement.

Diagnosis Steps

1. Read the trouble codes with an OBD-II scanner to confirm P0057 is present and note any other codes.
2. Visually inspect the wiring harness and connector for the Bank 2, Sensor 2 (driver's side, downstream) oxygen sensor. Look for any signs of melting, chafing, or corrosion.
3. Locate and check the fuse for the oxygen sensor heater circuit. In the engine bay fuse box for 2014-2016 models, this is typically fuse F11 (20A). Replace if blown.
4. If the wiring and fuse are okay, test the sensor's internal heater. Disconnect the sensor and use a multimeter set to Ohms to measure the resistance between the two heater wires (typically the two wires of the same color). A reading of infinite resistance (OL) or near-zero resistance indicates the sensor has failed. A healthy sensor should have a low resistance, typically between 10 and 30 ohms.
5. If the sensor's resistance is within spec, check for power at the harness connector. With the ignition on (engine off), use a multimeter to verify that one of the heater circuit pins has 12V.
6. If the sensor tests bad, replace it. If the sensor, wiring, and fuse all test good, the issue may be related to the PCM software. Consult a dealer or qualified shop about performing a software update as per Jaguar TSBs SSM72477 or JTB-00392-NAS-3.

Parts You'll Likely Need

• Oxygen Sensor (Bank 2, Sensor 2) (OEM #C2D23702, superseded by C2D54166, then T2H48050) — This is the most frequent cause of a P0057 code, as the internal heater element fails over time.
  Trusted brands: Bosch, Denso, NGK, Walker
  OEM price range: $200-$250
  Aftermarket price range: $65-$150

Related Codes That Often Appear With This One

• P0037 — This is the equivalent heater circuit low code for Bank 1, Sensor 2. Seeing both may indicate a common power or ground issue, such as a blown fuse or a problem with the heater relay.
• P0056 — This code is for 'HO2S Heater Resistance' for the same sensor (Bank 2, Sensor 2) and can appear if the heater element fails in a specific way that the PCM interprets as an out-of-spec resistance value.
• P0157 — This code is for 'O2 Sensor Circuit Low Voltage' for the same sensor (Bank 2, Sensor 2), indicating a problem with the sensor's signal circuit, not the heater. They can appear together if wiring is damaged, affecting multiple conductors in the harness.

Technical Service Bulletins (TSBs) & Recalls

• SSM72477: Notes that various heated oxygen sensor codes, including P0057, may be present even when no fault is found with the component, pointing to a potential software issue.
• JTB-00392-NAS-3: Groups P0057 with other DTCs relevant to post-catalyst heated oxygen sensors and provides a specific service instruction: if a DTC is present, replace the sensor, then update the PCM software.
• JTB00392NAS1: An earlier version of the above bulletin, also listing P0057 among a wide range of oxygen sensor codes.

Platform-Specific Known Issues

• Jaguar has issued Technical Service Bulletins JTB-00392-NAS-3, JTB00392NAS1, and SSM72477, which include the P0057 code. TSB JTB-00392-NAS-3 is most specific, stating the cause may be a 'post-catalyst heated oxygen sensor (HO2S) software error'. The official repair procedure is to first diagnose the DTC. If a code like P0057 is stored, the technician is instructed to replace the relevant sensor *first*, then proceed to update the Powertrain Control Module (PCM) software. This indicates that simply clearing the code or updating the software without replacing an already-failed sensor may not resolve the issue.

Mechanic-Grade Diagnostic Values

• O2 Sensor Heater Element Resistance — expected: 10 - 30 Ohms. Failure: A reading of infinite resistance (Open Loop) or near-zero Ohms (short circuit) indicates a failed heater element.
• Heater Circuit Voltage Supply (KOEO) — expected: Approximately 12 Volts (Battery Voltage). Failure: A reading significantly below 12V or 0V indicates a problem with the power supply, such as a blown fuse (F11 in engine bay fuse box) or a wiring issue.
• Heater Circuit Ground Integrity — expected: Near 0 Volts (Voltage Drop). Failure: A voltage reading significantly above 0V on the ground side of the circuit indicates high resistance in the ground path, possibly due to a corroded or loose ground strap.

Hidden / Shadow Codes Worth Checking

• N/A: While no specific 'shadow codes' are consistently documented for P0057, Jaguar's SDD software may log related faults under an 'Unrelated Events' category if the symptoms entered don't directly match the code's primary trigger. A technician may find additional context there. (see via Jaguar SDD (Symptom Driven Diagnostics) or Pathfinder dealer-level software.)

Scan Tool Commands That Help

• Jaguar SDD / Pathfinder: Datalogger - Live HO2S Data Monitoring — This function is used to observe the live operation of the oxygen sensors, including heater circuit status and sensor voltage switching. It is critical for confirming if the sensor is responding correctly after a repair or for diagnosing intermittent issues that don't immediately set a hard code.
• Jaguar SDD / Pathfinder: Service Functions - Update Powertrain Control Module — This is used to apply the software update specified in TSB JTB-00392-NAS-3. It should be performed after confirming the sensor and wiring are functional, or after replacing a failed sensor, to resolve potential over-sensitivity in the PCM's monitoring calibration.

Wiring & Ground Locations

• Bank 2 Sensor 2 Connector — The connector for the driver's side (Bank 2) downstream (Sensor 2) O2 sensor is typically located on the side of the transmission housing, accessible from underneath the vehicle.. This is the primary connection point to test the sensor and the vehicle harness. Corrosion or damage here is a common cause of circuit faults.
• Main Engine Ground Strap — A large braided ground strap connects the engine/transmission assembly to the vehicle's chassis/frame rail, typically on the lower passenger side (right side) of the car, near the transmission.. A corroded or loose main ground strap can cause a variety of electrical issues, including low voltage faults like P0057, as it provides the primary return path for many engine sensors and components.
• G1D132D — A ground point located on the right side of the rear engine compartment.. This is one of the specific ground points for the engine management system. Poor contact here can lead to erratic sensor readings and circuit codes.

Real Owner Repair Stories

• JaguarForums.com user 'thefixer' (2003 Jaguar XKR (similar V8 architecture)) — Check Engine Light with DTC P0057.
  ❌ Tried (didn't work) Initial confusion due to conflicting diagrams in JTIS (Jaguar Technical Information System).
  ✅ What actually fixed it The user confirmed that P0057 correctly identified the driver's side (Bank 2), downstream (Sensor 2) oxygen sensor. Replacing this sensor with a Denso 234-4798 resolved the code.

OEM Part Supersession History

• C2D23702 → C2D54166, which was then superseded by T2H48050. — Standard part evolution for improved reliability, material changes, or supplier consolidation.
  Heads up: The latest part number, T2H48050, is the correct service replacement. Using older stock (C2D23702) if found may not include the latest revisions that prevent premature failure.

Model Year Variations Within This Range

• 2015: The F-TYPE Coupe was introduced for the 2015 model year. The underlying powertrain and sensor locations are identical to the convertible, but underbody access may have minor differences.
• 2016: The 2016 model year introduced optional All-Wheel Drive (AWD) on V6 S models and made it standard on V8 R models. The addition of a front differential and transfer case may alter the routing of the exhaust downpipes and associated O2 sensor wiring harnesses, potentially changing accessibility compared to RWD models.