P1235.... What should I look for?

[guybo]

So I went to drive to work (70F, humid if that matters) and the CEL came right on. Limp mode.

I checked the code and it was p1235, high pressure fuel pump circuit. Is there anything I can do or check?

[steve99]

Originally Posted by guybo

So I went to drive to work (70F, humid if that matters) and the CEL came right on. Limp mode.

I checked the code and it was p1235, high pressure fuel pump circuit. Is there anything I can do or check?

HPFP has pressure monitoring, from memory aboit 2-4 mpa at idle amd up to 19 at high rpm


Check electrical connector on hpfp maybe remove and clean connector

[guybo]

I've been waiting for morning in Australia and you to wake up @steve99 LOL. TY

Still no dice, tilt tray (we call it a flatbed) is on the way. Should be (hopefully!) a warranty item. It's listed as a powertrain part.

[steve99]

Originally Posted by guybo

I've been waiting for morning in Australia and you to wake up @steve99 LOL. TY

Still no dice, tilt tray (we call it a flatbed) is on the way. Should be (hopefully!) a warranty item. It's listed as a powertrain part.

yeah sound like the hpfp may have problem or failed ot the intergrated pressure sensor failed. wont be a cheap fix, so hopefully covered under warantee


Its also possible the low pressure pump in tank has failed/low pressure or blocked filter as theirs no monitoring or pressure sensor on it. As it feeds fuel to hpfp

[guybo]

Toyota of Tampa Bay replaced the EDU (HPFP control module) and checked the MAP. These were the cheap fixes. They sent me off and said if I had more issues bring it back. I also mentioned in passing about the crickets. The service advisor said if the chirp continues, bring it back, there's a TSB. As a side note, they ran my battery down and replaced it for free. Good on you, TOTB!

Next week, fuel pressure doesn't look right (torque pro) and there's a pending code of p219A. Car isn't running right even though fuel trims and AFR look good. I know how this car should drive. I take it back to them. Also, crickets are still there (as they had been from day 1).

This is where I go off. They tell me I have to undo my mods.... As in the fuse tap I have on my radio circuit. I shit you not. They also try to tell me that can cause the issue, they also point to my oil pressure sending unit and AFR gauge. I was yelling at the SA. I'M NOT THAT DUMB ASSHOLE. After much wrangling they finally replace the HPFP ($2004, but 0 cost to me) . That'$ why they didn't want to cover it. But there's a TSB, so WTF?

The car is back, hopefully there's no more issues.

Today I did see a pending code for p219a, but after I stopped for 30 mins and drove again, it cleared and never tripped a CEL. Should I be concerned?

[humfrz]

$2,000 for a fuel pump - did I read that correctly? -


humfrz

[steve99]

Originally Posted by guybo

Toyota of Tampa Bay replaced the EDU (HPFP control module) and checked the MAP. These were the cheap fixes. They sent me off and said if I had more issues bring it back. I also mentioned in passing about the crickets. The service advisor said if the chirp continues, bring it back, there's a TSB. As a side note, they ran my battery down and replaced it for free. Good on you, TOTB!

Next week, fuel pressure doesn't look right (torque pro) and there's a pending code of p219A. Car isn't running right even though fuel trims and AFR look good. I know how this car should drive. I take it back to them. Also, crickets are still there (as they had been from day 1).

This is where I go off. They tell me I have to undo my mods.... As in the fuse tap I have on my radio circuit. I shit you not. They also try to tell me that can cause the issue, they also point to my oil pressure sending unit and AFR gauge. I was yelling at the SA. I'M NOT THAT DUMB ASSHOLE. After much wrangling they finally replace the HPFP ($2004, but 0 cost to me) . That'$ why they didn't want to cover it. But there's a TSB, so WTF?

The car is back, hopefully there's no more issues.

Today I did see a pending code for p219a, but after I stopped for 30 mins and drove again, it cleared and never tripped a CEL. Should I be concerned?

log you afr and commanded afr make sure they follow failry closely under full load
also log ltft and see its sat below 10%

https://www.autocodes.com/p219a.html


that code can also be caused by intake or exhaust leaks and low fuel pressure

[guybo]

Yeah 2 grand. I watch AFR and fuel trims, even if I don't log them. So far they are perfect. AFR is great, fuel trims within +-5