The upstream O2 sensor on bank 2 is responding too slowly to exhaust gas changes.
Is It Safe to Drive With a P0153 Code?
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Drive With Caution — Get It Diagnosed Soon
You may be able to continue driving carefully for a short time, but this fault should be diagnosed promptly. If the EML is flashing, treat as a stop code.
Common Symptoms of a P0153 Fault
P0153 Symptoms at a Glance
Increased fuel consumption on bank 2
No significant driveability issues usually
Possible Causes of P0153
A P0153 code can be triggered by faults across several systems. Identifying the exact root cause requires proper diagnostic equipment and live data — not just reading the code.
Common Causes of P0153
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Aged O2 Sensor — Bank 2
Bank 2 upstream sensor element has deteriorated.
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Exhaust Leak
Exhaust leak diluting sensor readings.
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Sensor Contamination
Contamination on bank 2 sensor element.
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Wiring High Resistance
High resistance in bank 2 sensor circuit.
Why we don't list the exact part: A P0153 code tells you what's happening but not why. Replacing parts without diagnosis is the most common way drivers waste money. A proper diagnosis identifies the specific cause first.
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P0153 and Your MOT
A stored P0153 fault code will cause your car to fail its MOT. The engine management light will be illuminated during the test — an automatic failure. Get the fault diagnosed and repaired, then have the code cleared before booking your test.
Related Fault Codes
P0100 fault code
P0101 fault code
P0153 — o2 sensor circuit slow response — bank 2 sensor 1 — requires proper diagnosis before any parts are replaced. A Find Your Problem Now → gives you the most likely specific cause for your exact vehicle, UK repair cost and MOT risk instantly.