P0135 on RAM 1500 TRX: Fix & DLC Location
Factory diagnostic troubleshooting wire for fault code P0135 (O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)) specifically on the RAM 1500 TRX (2021–2024, 6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2)).
1. Symptoms of P0135 on RAM 1500 TRX
When the Engine Control Module (ECM/PCM) on your RAM 1500 TRX (6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2)) logs fault code P0135, drivers commonly observe:
2. Most Likely Causes on RAM 1500 TRX
Historical warranty claims and technical repair bulletins for RAM 1500 TRX point to the following failure distribution:
3. Step-by-Step DIY Repair Guide for RAM 1500 TRX
Locate the under-hood fuse box and test the O2 sensor heater fuse with a multimeter or test light. on the RAM 1500 TRX equipped with 6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2).
Unplug the Bank 1 Sensor 1 connector and test resistance between the two heater pins (typically 3 to 15 ohms). on the RAM 1500 TRX equipped with 6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2).
Use an O2 sensor socket wrench to remove the old sensor from the exhaust manifold and install an OEM-spec replacement with anti-seize on the threads. on the RAM 1500 TRX equipped with 6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2).
Other Common Fault Codes on RAM 1500 TRX
Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the RAM 1500 TRX:
4. RAM 1500 TRX P0135 FAQs
What causes code P0135 to trigger on a RAM 1500 TRX?
On the RAM 1500 TRX (6.2L Supercharged HEMI V8 (702HP / 650 lb-ft / Bilstein Black Hawk e2)), P0135 is most frequently caused by Burnt-out internal heating element in upstream oxygen sensor or Blown O2 sensor heater fuse.
Where is the OBD-II port located on my RAM 1500 TRX?
On the RAM 1500 TRX, the 16-pin DLC diagnostic connector is located Driver lower dash assembly next to hood release lever. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.
Can I safely drive my RAM 1500 TRX with code P0135?
Yes, vehicle is safe to drive, but will stay in open-loop mode longer upon startup. Given that P0135 carries a Low to Medium severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.