Volvo Owners Club Forum - View Single Post - Engine 850: B5252S/2.4/10v: - A2 code 5-2-1 & A3 code 4-4-4....

phatboy130 · Sep 23rd, 2011, 14:57

Hi Guys,

I have done several hundred miles over the past 2 weeks due to having to sort out the sudden passing away of a family member, bit of a shock to the car as it doesn't do very miles at each year, did 1k between the last MOT's lol.

Lamda light has come on, disco'd the battery, checked codes, I have A2 code 5-2-1, and A3 one (abs) is 4-4-4, altho this one is always there, I queried it while ago, it points to a faulty solenoid power supply or suchlike, but the abs works fine so have been advised to ignore it, as it appears that it does crop up on some cars.

Re the 5-2-1, am I right this is the front o2 sensor?, is there any connections I can try cleaning? And is the car ok to pootle about in short term? DIY'able? Cost for part?

Many thanks for your advice guys.

Sep 23rd, 2011, 14:57	#1
phatboy130 1999 V70 XT Auto Last Online: Apr 18th, 2024 21:51 Join Date: Aug 2009 Location: Devon	A2 code 5-2-1 & A3 code 4-4-4.... Hi Guys, I have done several hundred miles over the past 2 weeks due to having to sort out the sudden passing away of a family member, bit of a shock to the car as it doesn't do very miles at each year, did 1k between the last MOT's lol. Lamda light has come on, disco'd the battery, checked codes, I have A2 code 5-2-1, and A3 one (abs) is 4-4-4, altho this one is always there, I queried it while ago, it points to a faulty solenoid power supply or suchlike, but the abs works fine so have been advised to ignore it, as it appears that it does crop up on some cars. Re the 5-2-1, am I right this is the front o2 sensor?, is there any connections I can try cleaning? And is the car ok to pootle about in short term? DIY'able? Cost for part? Many thanks for your advice guys.