1. Jeep Grand Cherokee O2 sensor

​Original part numbers and OE NO.
​Upstream(Front) Oxygen Sensor part No.：
2022-2023: Mopar 68469863AA (fits 2.0L L4 engine)
2011-2020: NTK 234-4614 (fits 3.6L V6 engine)
Downstream(Rear) Oxygen Sensor part no:
2014-2020: Denso 234-4274 (fits 3.6L V6 engine)
​​​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0130(Faulty front oxygen sensor circuit):
Cause: broken wiring harness (common in off-road rear chassis cuts), blown sensor heater wire.
Repair: replace sensor, check wiring harness near exhaust manifold.
P0153 (Rear Oxygen Sensor Slow Response):
Cause: aging sensor (life expectancy of about 100,000 km), high temperature damage due to clogged catalytic converter.
REPAIR: Clean or replace the catalytic converter and also replace the sensor.

​​​What causes & How to repair
Off-road scenario: water ingress into the sensor after wading, causing the signal to drift (fault code P0133).
Urban congestion: Carbon buildup covers the sensor probe due to long-term short-distance driving (fault code P0134).
​How much oxygen sensor cost to replace？
Upstream(Front) Oxygen Sensor：150−250(Parts 99.41 + labor hours $50-100).
Downstream(Rear) Oxygen Sensor part No.: 180-300 (part 120-180 + labor $60-120).

2. Jeep Compass O2 sensor

​Original part numbers and OE NO.
​Upstream(Front) Oxygen Sensor part No.：
2018-2023: Mopar 68195741AA (fits 2.4L engine)
2007-2017: Mopar 5149171AA (fits 2.0L/2.4L engines)
Downstream(Rear) Oxygen Sensor part no:
2018-2020 models: mopar 68254612AA (fits 2.4L engines)
​​​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0134(Insufficient activity of front oxygen sensor):
Cause: Excessive lead in fuel, sensor poisoning (e.g. silicon contamination).
Repair: Replace the sensor and check the fuel quality.
P0420 (Catalytic converter inefficient):
Cause: Rear oxygen sensor false alarm (need to distinguish from catalytic converter failure).
Repair: Read the data stream with OBD-II diagnostic instrument to confirm the catalytic converter efficiency.

​​​What causes & How to repair
Difficulty in cold starting: heating of the front oxygen sensor fails in low temperatures (fault code P0135).
Stuttering acceleration: delayed sensor signal causes mixture imbalance (fault code P0137).
​How much oxygen sensor cost to replace？
Upstream(Front) Oxygen Sensor：120−200(Parts 78.39 + labor $40-80).
Downstream(Rear) Oxygen Sensor part No.: 140-220 (part 95-150 + labor $45-70).

3. Jeep Cherokee O2 sensor

​Original part numbers and OE NO.
​Upstream(Front) Oxygen Sensor part No.：
2014-2023: Mopar 68195741AA (fits 2.4L engine)
2011-2013: NTK 234-4076 (fits 3.6L engine)
Downstream(Rear) Oxygen Sensor part No.：
2014-2020: Denso 234-4212 (adapted to 3.2L engine)
​​​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P1196 (Slow response of heated oxygen sensor):
CAUSE: Aging of the sensor's internal circuitry (mostly seen in models over 10 years old).
Repair: Replace the sensor and check the ECU supply voltage.
P0150 (Rear Oxygen Sensor Circuit Failure):
Cause: corroded plug (common in coastal areas), loose sensor ground wire.
Repair: Clean the plug and tighten the ground wire.
​​​What causes & How to repair
High speed: The rear oxygen sensor monitors a decrease in catalytic converter efficiency (fault code P0420).
Frequent starts and stops: frequent operation of the front oxygen sensor heating wire leads to shortened life.
​How much oxygen sensor cost to replace？
Upstream(Front) Oxygen Sensor：130−210(Parts 81.55 + labor hours $50-90).
Downstream(Rear) Oxygen Sensor part No.: 160-240 (part 106-160 + labor $50-80).

4. Jeep Wrangler O2 sensor

​Original part numbers and OE NO.
​Upstream(Front) Oxygen Sensor part No.：
2018-2023: Mopar 68224424AA (fits 3.6L engine)
2007-2017: Denso 234-4593 (fits 3.8L engine)
Downstream(Rear) Oxygen Sensor part No.：
2018-2023: Mopar 68291423AB (fits 3.6L engine)
​​​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0133 (Slow response of front oxygen sensor):
CAUSE: Exhaust heat while off-roading caused the sensor ceramic body to crack.
Repair: Replace with a high temperature resistant sensor (e.g. Bosch 13610).
P0152 (Rear Oxygen Sensor High Voltage):
Cause: short circuit in sensor signal line (e.g., worn wiring harness when modifying winch).
Repair: troubleshoot the wiring harness and replace the sensor.
​​​What causes & How to repair
Extreme off-roading: sensor water ingress after wading (fault code P0132).
Prolonged idling: carbon buildup clogging sensor pores (fault code P0134).
​How much oxygen sensor cost to replace？
Upstream(Front) Oxygen Sensor：180−270(Parts 151-191 + hours $30-80).
Downstream(Rear) Oxygen Sensor part No.: 200-300 (parts 160-220 + labor $40-80).

5. Jeep Renegade O2 sensor

​Original part numbers and OE NO.
​Upstream(Front) Oxygen Sensor part No.：
2016-2023: Mopar 68195741AA (fits 1.3L/2.4L engines)
Downstream(Rear) Oxygen Sensor part no:
2016-2023: Bosch 13777 (fits 1.3L/2.4L engines)
​​​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0138 (Front oxygen sensor voltage high):
Cause: Sensor signal wire shorted to power supply (e.g., mouse chewed wire).
Repair: Repair the wiring harness and replace the sensor.
P0430 (Catalytic converter inefficiency):
Cause: Rear oxygen sensor false alarm (needs to be verified with a diagnostic).
Repair: Clean sensor probe and replace if necessary.
​​​What causes & How to repair
City commuting: short trips cause carbon buildup on sensors (fault code P0134).
Low temperature start: sensor heating failure (fault code P0135).
​How much oxygen sensor cost to replace？
Upstream(Front) Oxygen Sensor：140−180(Parts 99-140 + hours $40-50).
Downstream(Rear) Oxygen Sensor part No.: 160-200 (Parts 110-150 + labor $50-70).

6. Jeep Patriot O2 sensor

​Original part numbers and OE NO.
​Upstream(Front) Oxygen Sensor part No.：
2011-2017: Mopar 5149171AA (fits 2.0L/2.4L engines)
Downstream(Rear) Oxygen Sensor part no:
2011-2017: Denso 234-4212 (fits 2.0L/2.4L engines)
​​​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0130 (Front Oxygen Sensor Circuit Malfunction):
Cause: Loose sensor plug (mostly seen on bumpy roads).
Repair: Tighten the plug and check the wiring harness.
P0150 (Rear Oxygen Sensor Circuit Failure):
CAUSE: Corroded sensor ground wire (e.g. coastal areas).
Repair: Clean ground wire and replace sensor.
​​​What causes & How to repair
Frequent rapid acceleration: sensor poisoning due to too rich a mixture (fault code P0134).
High speed cruising: rear oxygen sensor monitoring catalytic converter deterioration (fault code P0420).
​How much oxygen sensor cost to replace？
Upstream(Front) Oxygen Sensor: 120-160 (parts 75-110 + labor $40-60).
Downstream(Rear) Oxygen Sensor part No.: 140-180 (part 90-130 + labor $50-70).

7. Jeep Commander O2 sensor

​Original part numbers and OE NO.
​Upstream(Front) Oxygen Sensor part No.：
2006-2010: Bosch 13610 (fits 4.7L V8)
Downstream(Rear) Oxygen Sensor part no:
2006-2010: NTK 23159 (for 4.7L V8 engine)
​​​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0133 (Slow response from front oxygen sensor):
CAUSE: Sensor internal heater failure (mostly seen in high mileage models).
Repair: Replace the sensor and check the ECU power supply.
P0153 (Rear Oxygen Sensor Slow Response):
CAUSE: Clogged catalytic converter causing sensor to overheat.
Repair: Clean or replace the catalytic converter and replace the sensor at the same time.
​​​What causes & How to repair
Trailer RV: prolonged heavy loading causes excessive load on catalytic converter (fault code P0420).
Low temperature start: front oxygen sensor heater wire failed (fault code P0135).
​How much oxygen sensor cost to replace？
Upstream(Front) Oxygen Sensor：160−240(Parts $100-150 + labor hours $60-90).
Downstream(Rear) Oxygen Sensor part No.: 180-260 (part 120-170 + labor $60-90).

8. Jeep Gladiator O2 sensor

​Original part numbers and OE NO.
​Upstream(Front) Oxygen Sensor part No.：
2020-2023: Mopar 68224424AA (fits 3.6L engine)
Downstream(Rear) Oxygen Sensor part no:
2020-2023: Mopar 68291423AB (fits 3.6L engine)
​​​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0134 (Insufficient activity of front oxygen sensor):
Cause: Sensor poisoning due to fuel additives (e.g. leaded gasoline).
Repair: Replace sensor and use unleaded fuel.
P0420 (Catalytic converter inefficient):
Cause: Rear oxygen sensor false alarm (need to compare with actual efficiency of catalytic converter).
Repair: Read the waveforms of the front and rear oxygen sensors with a diagnostic instrument to confirm the source of the fault.
​​​What causes & How to repair
Off-road: high exhaust temperatures cause sensor ceramic body to crack (fault code P0133).
Prolonged idling: carbon buildup covers sensor probe (fault code P0134).
​How much oxygen sensor cost to replace？
Upstream(Front) Oxygen Sensor：150−230(Parts 99-140 + hours $50-90).
Downstream(Rear) Oxygen Sensor part No.: 170-250 (parts 110-160 + labor $60-90).

9. Jeep Cherokee XJ O2 sensor

​Original part numbers and OE NO.
​Upstream(Front) Oxygen Sensor part No.：
1996-2001: NTK 234-4076 (for 4.0L engine)
Downstream(Rear) Oxygen Sensor part no:
1996-2001: NTK 234-4078 (for 4.0L engine)
​​​​Defender Oxygen Sensor Fault Codes & Symptom Signs
P0130 (Front Oxygen Sensor Circuit Failure):
CAUSE: Wiring harness deterioration (mostly seen in models over 20 years old).
Repair: Replace the wiring harness and also replace the sensor.
P0150 (Rear oxygen sensor circuit failure):
Cause: Sensor plug oxidized (if not maintained for a long time).
Repair: Clean the plug and apply conductive paste.
​​​What causes & How to repair
Older models: natural aging of sensors (fault code P0134).
Modified exhaust: abnormal signal due to sensor position change (fault code P0132).
​How much oxygen sensor cost to replace？
Upstream(Front) Oxygen Sensor：80−140(Parts $50-90 + labor hours $30-50).
Downstream(Rear) Oxygen Sensor part No.: 90-150 (part 60-100 + labor $30-50).
Market Trends and Maintenance Recommendations
Impact of electrification: Jeep plans to fully electrify in 2025, but fuel vehicles still account for more than 70% of sales in Europe and the U.S. Oxygen sensor repair demand continues.
Failure commonality:
Sensor poisoning: lead/silicon contamination in fuel (35% of failure causes).
Wiring Harness Problems: off-road or aging causing breaks/shorts (25% of cases).
Maintenance Tips:
Prioritize diagnostics: use OBD-II to read real-time data streams to avoid mistakenly swapping sensors.
Cost Control:
DIY Replacement: front oxygen sensor can be replaced by yourself (special wrench is required), saving 50% labor cost.
Preventive maintenance: clean the sensor probe every 50,000 kilometers to prolong the life.
(Note: The above prices may fluctuate ±15% due to regional and channel differences, real-time data suggest checking Jeep dealers or RepairPal.)
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