P0171 & P0174 - Jaguar S Type
#1
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Recently my Jaguar S-Type showed the "restricted performance" indication. Also the engine indication turned on. I ran diagnostics and my OBD device read the following codes: P0171 & P0174 (Car Too Lean).
The funny is that when I put super benzin the problem disappears. The problem seems to occur when I put 95 unleaded.
Anyone who happens to know the causes and -maybe- the solution to this problem?
The funny is that when I put super benzin the problem disappears. The problem seems to occur when I put 95 unleaded.
Anyone who happens to know the causes and -maybe- the solution to this problem?
#2
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How's the consumption?
It could be an air leak, knowing that it's very easy to get one on the s type. Check everything from the air box to the plastic manifold.
Bad injectors, maybe you need to bench test them and clean them.
Bad fuel pump if the injectors are fine
Also you could try to change your gas station, and try another 95 unleaded
What's your engine year and mileage? And which country?
It could be an air leak, knowing that it's very easy to get one on the s type. Check everything from the air box to the plastic manifold.
Bad injectors, maybe you need to bench test them and clean them.
Bad fuel pump if the injectors are fine
Also you could try to change your gas station, and try another 95 unleaded
What's your engine year and mileage? And which country?
#3
Join Date: Jan 2012
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@JaggieJag, what is the MY of the vehicle and which engine is fitted? What work has recently been performed on the engine?
Use a smartphone to connect with the vehicle PCM via the OBD port with a Bluetooth adapter and the Torque app to determine the STFTs and LTFTs.
Under not circumstances is the vehicle to be operated under conditions that cause the MIL to flash as catalyst damage is occurring.
Use a smartphone to connect with the vehicle PCM via the OBD port with a Bluetooth adapter and the Torque app to determine the STFTs and LTFTs.
Under not circumstances is the vehicle to be operated under conditions that cause the MIL to flash as catalyst damage is occurring.
#5
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@JaggieJag, what is the MY of the vehicle and which engine is fitted? What work has recently been performed on the engine?
Use a smartphone to connect with the vehicle PCM via the OBD port with a Bluetooth adapter and the Torque app to determine the STFTs and LTFTs.
Under not circumstances is the vehicle to be operated under conditions that cause the MIL to flash as catalyst damage is occurring.
Use a smartphone to connect with the vehicle PCM via the OBD port with a Bluetooth adapter and the Torque app to determine the STFTs and LTFTs.
Under not circumstances is the vehicle to be operated under conditions that cause the MIL to flash as catalyst damage is occurring.
#6
#7
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Thanks for replying, Mellow. I will have a Jag-authorised mechanic to check my car. There aren't many in Greece... Hope he finds out what the problem is...
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S-Type Owner (09-10-2020)
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