P0133 and P0153

[Sultan Ford]

Hello guys,

My 05 TJ 4.0 6 speed had a check engine light few weeks ago i got P0153 code, replaced both upstream O2 sensors with NTK/NGK and after around 220 miles the CEL is back with P0133 and P0153! What should i look for now?

TIA

NTK 23018
NTK 23160

 

[CharlesHS]

Inspect all the O2 sensor terminals for oxidation or bare wiring then verify the exhaust manifold does not have any cracks or leaks where the collector connects to the exhaust system.

 

[Sultan Ford]

Inspect all the O2 sensor terminals for oxidation or bare wiring then verify the exhaust manifold does not have any cracks or leaks where the collector connects to the exhaust system.

Will check, Thanks