Ram 1500 O2 sensor

Original part numbers and OE NO.：

Upstream(Front)Oxygen Sensor part No. 52092506AA（ACDelco 12167890）；Downstream(Rear) Oxygen Sensor part No. 52092507AA（ACDelco 12167891）
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Defender Oxygen Sensor Fault Codes&Symptom Signs and Repair Recommendations
P0130 (wiring harness aging / sensor poisoning, replace wiring harness or sensor);

P0155 (heater wire melted, measure resistance and replace)
How to remove and how to clean？
Battery disconnected, 22mm socket removed; alcohol soak + soft brush cleaning (no sandpaper)
How much oxygen sensor cost to replace？

Original Front O2 Sensor $280-350/generic $120-180；Original rear O2 Sensor $320-400/generic$150-220；pre-hours Front $80-120/rear$150-200

Ram 2500/3500 O2 sensor

Original part numbers and OE NO.：

Upstream(Front)Oxygen Sensor part No.（diesel fuel）52092510AA（Cummins 4920772）；

Downstream(Rear) Oxygen Sensor part No.(gasoline)52092511AA（ACDelco 12167911）
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Defender Oxygen Sensor Fault Codes&Symptom Signs and Repair Recommendations
P0137 (shorted circuit, check trailer harness); P0158 (clogged catalytic converter, measure differential pressure and replace)
How to remove and how to clean？
Diesel version removes turbo heat shield; chemical cleaner removes sulfides (no soaking)
How much oxygen sensor cost to replace？

Pre-OEM (diesel) $450-550/$200-280 secondary; Post-OEM (gasoline) $380-450/$180-250 secondary; Labor hours diesel $200-300/gasoline $150-200

Ram ProMaster O2 sensor

Original part numbers and OE NO.：Upstream(Front)Oxygen Sensor part No. 52092513AA（ACDelco 12167930）；Downstream(Rear) Oxygen Sensor part No. 52092514AA（ACDelco 12167931）
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Defender Oxygen Sensor Fault Codes&Symptom Signs and Repair Recommendations
P0134 (connector corroded, clean contacts); P0154 (ground wire loose, tighten to 10N/m)
How to remove and how to clean？
Remove air intake hose/lift vehicle; ultrasonic cleaning (40kHz, 15 minutes)
How much oxygen sensor cost to replace？Original Front O2 Sensor $260-320/generic $110-160；Original rear O2 Sensor $300-380/generic $140-200；pre-hours front $100-150/rear $180-250

Ram ProMaster City O2 sensor

Original part numbers and OE NO.：Upstream(Front)Oxygen Sensor part No. 52092516AA（ACDelco 12167940）；Downstream(Rear) Oxygen Sensor part No. 52092517AA（ACDelco 12167941）
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Defender Oxygen Sensor Fault Codes&Symptom Signs and Repair Recommendations
P0133 (sensor deterioration, waveform replacement); P0153 (low catalytic converter efficiency, add PEA additive)
How to remove and how to clean？
Remove air filter assembly / subframe heat shield; wash and dry with acetone.
How much oxygen sensor cost to replace？Original Front O2 Sensor $240-300/generic $100-150；Original rear O2 Sensor $280-350/generic $130-190；labor front $80-120/rear $150-200

Ram 3500 Chassis Cab O2 sensor

Original part numbers and OE NO.：Upstream(Front)Oxygen Sensor part No.(Diesel)52092520AA（Cummins 4920775）；Downstream(Rear) Oxygen Sensor part No.(gasoline)52092521AA（ACDelco 12167951）
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Defender Oxygen Sensor Fault Codes&Symptom Signs and Repair Recommendations
P0139(heater failure, measure current and replace); P0159 (ECU needs upgrade, StarScan update)
How to remove and how to clean？
Remove urea tank / use universal joint socket; special anti-sulfuration cleaner
How much oxygen sensor cost to replace？原厂front（柴油）$500-600/generic $220-300；原厂rear（汽油）$400-480/generic $190-260；labor 柴油$250-350/汽油$180-250

Ram 1500 Classic O2 sensor

Original part numbers and OE NO.：Upstream(Front)Oxygen Sensor part No. 52092523AA（ACDelco 12167960）；Downstream(Rear) Oxygen Sensor part No. 52092524AA（ACDelco 12167961）
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Defender Oxygen Sensor Fault Codes&Symptom Signs and Repair Recommendations
P0132(signal wire shorted, check modified harness); P0152 (fuel pressure high, measure pressure to change regulator)
How to remove and how to clean？
Remove engine trim cover / use extension rod; blow out threads with compressed air
How much oxygen sensor cost to replace？Original Front O2 Sensor $270-340/generic $110-170；Original rear O2 Sensor $310-380/generic $140-200；labor front$90-130/rear$160-220

Ram 50 O2 sensor

Original part numbers and OE NO.：Upstream(Front)Oxygen Sensor part No. 52092526AA（ACDelco 12167970）；Downstream(Rear) Oxygen Sensor part No. 52092527AA（ACDelco 12167971）
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Defender Oxygen Sensor Fault Codes&Symptom Signs and Repair Recommendations
P0131(poor ground, clean rust); P0151 (EGR stalled, clean valve seat)
How to remove and how to clean？
Penetrant soak + 22mm wrench; wire brush to clean threads
How much oxygen sensor cost to replace？Original Front O2 Sensor $250-320/generic $100-160；Original rear O2 Sensor $290-360/generic $130-190；labor front$100-150/rear$170-230

Ramcharger O2 sensor

Original part numbers and OE NO.：Upstream(Front)Oxygen Sensor part No. 52092530AA（ACDelco 12167980）；Downstream(Rear) Oxygen Sensor part No. 52092531AA（ACDelco 12167981）
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Defender Oxygen Sensor Fault Codes&Symptom Signs and Repair Recommendations
P0136(wiring harness disconnected, measure conductivity); P0156 (ECU failure, return to factory for repair)
How to remove and how to clean？
Remove engine mounts + extensions; soak in white vinegar to remove sulfates
How much oxygen sensor cost to replace？Original Front O2 Sensor $300-380/generic $120-180；Original rear O2 Sensor $340-420/generic $150-220；labor front$120-180/rear$200-280

Ram 1500 TRX O2 sensor

Original part numbers and OE NO.：Upstream(Front)Oxygen Sensor part No. 52092533AA（ACDelco 12167990）；Downstream(Rear) Oxygen Sensor part No. 52092534AA（ACDelco 12167991）
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Defender Oxygen Sensor Fault Codes&Symptom Signs and Repair Recommendations
P0138(faulty air flow meter, measure data and replace); P0158 (low fuel pump pressure, upgrade pump)
How to remove and how to clean？
Intercooler line/rear bumper removal; dry ice cleaning (-78°C)
How much oxygen sensor cost to replace？Original Front O2 Sensor $400-500/generic $180-250；Original rear O2 Sensor $450-550/generic $200-280；labor front$150-220/rear$250-350
Supplementary data notes
Part number adaptability: Some part numbers may be slightly adjusted due to differences in engine models and years, it is recommended to check the specific adaptability information through the VIN code.
Fault Code Diagnosis: Oxygen sensor failure may be related to the ECU software version, it is recommended to use a special diagnostic instrument for parameter calibration.
(Note: The above prices may fluctuate ±15% due to regional and channel differences, real-time data suggest checking local dealers)

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