Jollyjacktarjack
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Afternoon Folks Update as promised, it didn't fix the problem unfortunately. Replaced the CPS and the 12v battery for good measure. Exact same problem as earlier, other than the engine didn't run for as long and within 300 metres I was turning for home and limping back on hybrid battery. Same codes appeared P0138 (changed 2 of these), P3190, P3193 and P0A0F Any other pearls of wisdom gratefully received please? Thanks, JJTJ
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Thanks Steve, do you have any signposts towards the CPS location please? I think (from my internet scour) is that its located on the front right of the block beneath the air filter housing? Just another thought, would I not get a fault code for a defective CPS, or are the other codes sort of masking the root cause? Thanks, JJTJ
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Morning Folks, This is a separate thread from my 'RX400H O2 sensors' to try and illicit further responses from the Lexus community please? My 2006 RX400H, starts, drives, warms up and then engine cuts out and I have to limp home on the hybrid battery. I have checked and cleaned the MAF and air filter, checked as far as possible the vacuum hoses and even popped out the front bank of spark plugs. I love driving this car but I am at a loss of what to do next, grateful for anybody who may have a clue please? Codes are as follows - P0138 (changed 2 of these), P3190, P3193 and P0A0F. Thanks, JJTJ
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RX400h O2 sensors
Jollyjacktarjack replied to Jollyjacktarjack's topic in RX 300 / RX 350 / RX 400h / RX 200t / RX 450h Club
Thanks for the response Colin, much obliged. I do get water ingress, common with this model. In wet weather it gets a cover placed over it! To the vacuum hoses, assume these are the ones to/from the air filter area please? Thanks, JJTJ -
RX400h O2 sensors
Jollyjacktarjack replied to Jollyjacktarjack's topic in RX 300 / RX 350 / RX 400h / RX 200t / RX 450h Club
Update Folks, MAF cleaned, as well as the air filter. Car driven this morning and all was well until the car had warmed up, the old symptoms of the car appeared, ie a selection of beeps and warnings and being forced to limp home on the hybrid battery (the engine does restart if you switch on and off though) above codes are still present as well as some new ones - C1259,C1310. Anymore thoughts before I think me and my trusty Lexus have to part ways please? Thanks, JJTJ -
RX400h O2 sensors
Jollyjacktarjack replied to Jollyjacktarjack's topic in RX 300 / RX 350 / RX 400h / RX 200t / RX 450h Club
Thanks Colin, assume I can use carb cleaner please? -
RX400h O2 sensors
Jollyjacktarjack replied to Jollyjacktarjack's topic in RX 300 / RX 350 / RX 400h / RX 200t / RX 450h Club
Evening Folks, Update on the issue below - changed the O2 sensor (sensor (HO2S) 2, bank 1) and the car ran great for 18 months. The same code reappeared in Dec 23, changed the same sensor and it cleared for a week, sent that sensor back and bought another, ran great again for 1 month. Today the following popped up: P0138, P3190, P3193 and P0A0F The car ran rough for a bit, stopped and restarted. Continued home and all appeared to be running OK, the Check Hybrid System lights remained illuminated though. Any thoughts please folks MAF, another sensor change,Hybrid battery starting to fail...? Thanks JJTJ -
RX400h O2 sensors
Jollyjacktarjack replied to Jollyjacktarjack's topic in RX 300 / RX 350 / RX 400h / RX 200t / RX 450h Club
Many thanks Herbie and Colin B! I read the following on my VeePak OBD: Car Scanner ELM OBD2 DTC report Selected brand: Lexus ============1============== P0037 Raw code: 0037 ECU: Engine control unit Status: Confirmed OBDII: Heated oxygen sensor (HO2S) 2, bank 1, heater control - circuit low Lexus: Oxygen Sensor Heater Circuit Low Input (Bank 1, Sensor 2) ============2============== P0037 Raw code: 0037 ECU: Engine control unit #1 Status: Confirmed OBDII: Heated oxygen sensor (HO2S) 2, bank 1, heater control - circuit low Lexus: Oxygen Sensor Heater Circuit Low Input (Bank 1, Sensor 2) Still unsure which sensor this actually relates to please? Thanks, JJTJ -
RX400h O2 sensors
Jollyjacktarjack replied to Jollyjacktarjack's topic in RX 300 / RX 350 / RX 400h / RX 200t / RX 450h Club
Many thanks Herbie, can you confirm there are 3 x O2 sensors on my 2005 RX400h please? -
Evening Folks, Finally cleared the fault and everything is back to normal, the issue was a leaking sun/moonroof blocked drain.... Herbie et al, kindly guided me towards the US Lexus forums and its all there in a fair amount of detail and not overly difficult to diagnose and fix either. To stop the water collecting in that piece of box section/cavity I removed the front bolt holding the black sill cover on and worked the little plastic drain loose. (It reminded me of one of those kayak type drain plugs) As I said above the internal grommets inboard of that area yielded a fair amount of water also. So I've dried out the passenger foot well and the two of the dash lights went off automatically, I cleared the 3rd with my Veepak OBD reader and she running like a dream again. Thanks to all (on both sides of the pond) to remove my pond from the footwell! Regards, JJTJ
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Evening Colin and Herbie, Many thanks for your useful tips above. So I have exactly that, a sunroof drain problem, the carpet is up and drying as we speak. I did remove a grommet (slightly inboard from the recognised drain) and a lot of water came out from both sides but its only really the passenger side that was wet. My question is whether you managed to insert a piece of wire into the recognised drain to clear it please? I couldn't seem to be able to locate that drain grommet from under the car, is behind the black trunking/skirt below the sill? Now the wait continues and hopefully the Check Hybrid/VSC lights rectify themselves! Thanks again JJTJ
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Afternoon Herbie, Thanks and I'd discounted this previously as the carpets didn't feel wet, however on peeling the carpet back it was sodden! Somehow hadn't permeated its way in to the cabin... So I've dried that out and will hair drier around those relays and connectors and see what develops. The obvious follow on leads me into checking the sunroof drains - does that seem sensible please? TIA JJTJ
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Evening All, After 3 days the fault disappeared - good news! Bad news the fault has returned, back seats removed but can't really see any signs of water ingress to the hybrid battery area. Common sense tells me not to remove anymore covers around the battery area, will leave it to air and hopefully dry out. Will report any progress back...
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Morning Crosscyl, Thanks - so after a few dry days my Lexus has settled down and all lights (less the Lambda O2 sensor) have extinguished and normal service has resumed. I did take it to a local dealership and they produced an eye watering quote for them to do some investigatory work. So, I spent a couple of hours resealing the known problematic areas around the rear tailgate and rear roof bar bolts. Interested in more details on the glovebox situation, assume that is water ingress around the windshield that causes that? Thanks, JJTJ