1.Dodge Challenger O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.: 68248740AB (fits 6.2L HEMI V8 engine, universal 2020-2025 models)
Downstream(Rear) Oxygen Sensor part No.: 68248741AC (compatible with SRT Hellcat Redeye version)
​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0130/P0134 (abnormal signal/no signal): carbon covered or plug oxidized, suggest to use ferric chloride solution to soak and clean (cost 30-50), ineffective then replace.
P2270 (signal sticky): high sulfur fuel pollution triggered, need to replace the 98 fuel and clean the sensor probe.
​What causes & How to repair
Track driving: sustained high RPM causes sensor overheating and triggers signal drift (recommend adding heat shield).
Modified Exhaust: Non-stock exhaust system interferes with signal, need to recalibrate voltage waveform.
​How much oxygen sensor cost to replace？
Original parts: 400-800 (200-350 for labor)
Sub-factory parts (NTK/Denso): 250-500

2.Dodge Charger O2 sensor

Original part numbers and OE NO.
Upstream (Front) Oxygen Sensor part No.: 05180347AA (3.6L V6 engine, fits 2015-2023 models)
Downstream(Rear) Oxygen Sensor part No.: 05180348AB (common with Challenger)
​​Defender Oxygen Sensor Fault Codes & Symptom Signs
​P0420 (Catalytic converter inefficiency): Exhaust leakage or rear oxygen sensor failure, synchronized testing of front and rear oxygen signal curves is required.
P0171/P0172 (mixture too thin/thick): dirty MAF sensor or abnormal fuel pressure, recommend cleaning the intake system.
​What causes & How to repair
Urban congestion: frequent starts and stops lead to carbon buildup (fuel additives are recommended every 20,000 kilometers).
Ethanol gasoline use: sulfide accelerates sensor poisoning, stabilizer (e.g. Red Line SI-1) is required.
​How much oxygen sensor cost to replace？
Original parts: 350-600 (150-250 for labor)
Secondary parts: 180-400 (Bosch 15733 series recommended)​

3.Dodge Durango O2 sensor

Original part numbers and OE NO.
Upstream (Front) Oxygen Sensor part No.: 56029302AA (5.7L V8 engine, fits 2016-2025 models)
Downstream(Rear) Oxygen Sensor part No.: 56029303AB (Diesel version requires dedicated heater)
​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0037/P0057 (abnormal heating circuit): wiring harness aging or ECU power supply failure, need to measure the voltage (standard 0.45V ± 0.1V).
P2096 (mixture too thin): injector clogging or exhaust leakage, it is recommended to check the exhaust sealing.
​What causes & How to repair
Long distance towing: hauling heavy loads results in a constant high load on the sensors (regular inspection of the exhaust system is recommended).
Cold regions: low temperatures cause delayed heating, need to replace the sensor with a fast-heating type.
​How much oxygen sensor cost to replace？
Original parts: 450-850 (200-400 for labor)
Secondary parts: 300-600 (diesel version requires verification of compatibility)

4.Dodge Grand Caravan O2 sensor

Original part numbers and OE NO.
Upstream (Front) Oxygen Sensor part No.: 234-4685 (3.6L Pentastar engine, fits 2011-2020 models)
Downstream(Rear) Oxygen Sensor part No.: 234-4686 (common to Chrysler Pacifica)
​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0135 (Heating Circuit Failure): broken harness or oxidized plug, recommend replacing harness (cost 50-100).
P2271 (Signal sticking low voltage): triggered by fuel dilution, need to replace high grade fuel.
​What causes & How to repair
Short family commute: delayed sensor response due to low speeds (regular cleaning of oil lines recommended).
Oil contamination: Oil burning causes oil film to cover the sensor probe (piston ring seals need to be checked).
​How much oxygen sensor cost to replace？
Original parts: 200-350 (80-120 for labor)
Secondary parts: 120-250 (ACDelco brand recommended)

5.Dodge Journey O2 sensor

Original part numbers and OE NO.
Upstream(Front) Oxygen Sensor part No.：​68248742AA​(2.4L four-cylinder engine for 2015-2025 models)
Downstream(Rear) Oxygen Sensor part No.：​68248743AB
​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0134 (no signal): Low temperatures cause delay in the heating circuit, need to replace with a modified sensor with fast heating.
P0420 (low efficiency of three-way catalytic): Carbon buildup or cracked ceramic in the sensor, cleaning or replacement is recommended.
​What causes & How to repair
​Frequent mixture corrections: Poor fuel quality causes signal drift (use of original fuel filter recommended).
High altitude: changes in oxygen concentration triggers ECU misjudgment (sensor parameters need to be reprogrammed).
​How much oxygen sensor cost to replace？
Original parts: 250-450 (100-180 for labor)
Sub-factory parts: 150-300 (VIN compatibility verification required)
Generic recommendations and data validation

Part Number Verification: Verify compatibility by entering the VIN number through the Mopar EPC system or a third party platform such as RockAuto.
Cost Optimization: Save 30%-50% on labor costs by purchasing your own sensors and having them repaired by a third party.
Diagnostic tool: Use Tech2 or AlfaOBD to read the oxygen sensor voltage waveform (normal range: front oxygen 0.1-0.9V fluctuation, rear oxygen 0.2-0.6V stable).
(Note: The above prices may fluctuate ±15% due to regional and channel differences, real-time data suggest checking RepairPal or local dealers)

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