Car judders while driving at low revs. EML light on. EGR change. Coil pack. Spark plugs. MAF. Swirl flaps cleaned.
Sep 16, 2023 at 12:44 AM
Code P0171 and P0052?
2008 VAUXHALL ZAFIRA
TOM CHILDS
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Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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The diagnostic trouble codes (DTCs) P0171 and P0052 in a 2008 Vauxhall Zafira indicate issues related to the engine's air-fuel mixture and the oxygen sensor.
P0171 - System Too Lean (Bank 1):
P0052 - HO2S (Heated Oxygen Sensor) Heater Control Circuit High Voltage (Bank 2 Sensor 1)
So, let's replace the Bank 2 Sensor 1 oxygen sensor and then clear the codes to see if the P0171 comes back you may have a vacuum leak, here are two guides to help us see what's going on:
https://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers
and
https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor
Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
P0171 - System Too Lean (Bank 1):
P0052 - HO2S (Heated Oxygen Sensor) Heater Control Circuit High Voltage (Bank 2 Sensor 1)
So, let's replace the Bank 2 Sensor 1 oxygen sensor and then clear the codes to see if the P0171 comes back you may have a vacuum leak, here are two guides to help us see what's going on:
https://www.2carpros.com/articles/repair-lean-mixture-codes-p0171-or-p0174-on-some-manufacturers
and
https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor
Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
Sep 18, 2023 at 11:24 AM
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