P300 code

Mt Tam I am · 01-22-2021, 12:37 PM

I have been having a recent problem with my Z. It takes longer to crank start and then became down on power, getting me into trouble when I pulled out and thought the car might stall when I gave it gas. It hesitates constantly.
Finally this morning it threw a code of P300 and B2607. Random misfire which I already can hear and B2607 & B2609 steering lock , and B2631 sun sensor.

Help! Car Idles Rough, Won't Accelerate, Service Engine Soon Light Flashes, Code P300

And ordered MAF cleaner.

The codes were reset and am waiting for what happens next.

Do you have any input?

JARblue · 01-22-2021, 01:13 PM

That damn code is a PITA. It's just a catch-all

Suggestions include clean MAFs/TBs, check for vacuum leaks, O2 sensors, spark plugs/injectors, fuel pump, oil pressure (gallery gaskets).

However, I notice you said p2631 is a sun sensor code? I'm seeing that as an O2 sensor code. So I would start there

Ooops... I read that wrong. Did you mean P2631 or B2631? The P code is O2 related. I know your car is aging (mine is a month away from 10 years old) so there's quite a few random things that could have failed or be failing.

Mt Tam I am · 01-22-2021, 05:34 PM

B2631

Ghostvette · 01-26-2021, 03:41 PM

Quote:

Originally Posted by Mt Tam I am

I have been having a recent problem with my Z. It takes longer to crank start and then became down on power, getting me into trouble when I pulled out and thought the car might stall when I gave it gas. It hesitates constantly.
Finally this morning it threw a code of P300 and B2607. Random misfire which I already can hear and B2607 & B2609 steering lock , and B2631 sun sensor.

Help! Car Idles Rough, Won't Accelerate, Service Engine Soon Light Flashes, Code P300

And ordered MAF cleaner.

The codes were reset and am waiting for what happens next.

Do you have any input?

Check the ground by the ECU inside the car. Given the "B" codes, you might have some corrosion around the ground connection.

DOOMMONKEY777 · 02-04-2021, 03:47 AM

take the spark plugs out and check them for burns and damages also if u have a gap gauge re-gap em if they are fine, the next thing i would look for is a bad coil and a dirty MAF or electrical gremlins.

fatso666 · 02-04-2021, 03:09 PM

i had this code combined with codes P1168, P037, P0057, P0031, P0051, P0150, P0130, changed all four O2 sensors and ALL went away

Mt Tam I am · 02-06-2021, 03:34 PM

It was the gas pump. I was not getting fuel. Metal shavings in tank.

It runs with full power that had gradually been lost.

Thank you for the suggestions.

willdoms · 02-23-2021, 12:24 AM

Did you remove the metal shavings in the tank? How?

01-22-2021, 12:37 PM	#1 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3844	P300 code I have been having a recent problem with my Z. It takes longer to crank start and then became down on power, getting me into trouble when I pulled out and thought the car might stall when I gave it gas. It hesitates constantly. Finally this morning it threw a code of P300 and B2607. Random misfire which I already can hear and B2607 & B2609 steering lock , and B2631 sun sensor. Help! Car Idles Rough, Won't Accelerate, Service Engine Soon Light Flashes, Code P300 And ordered MAF cleaner. The codes were reset and am waiting for what happens next. Do you have any input? __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

01-22-2021, 01:13 PM	#2 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 44 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684441	That damn code is a PITA. It's just a catch-all Suggestions include clean MAFs/TBs, check for vacuum leaks, O2 sensors, spark plugs/injectors, fuel pump, oil pressure (gallery gaskets). However, I notice you said p2631 is a sun sensor code? I'm seeing that as an O2 sensor code. So I would start there Ooops... I read that wrong. Did you mean P2631 or B2631? The P code is O2 related. I know your car is aging (mine is a month away from 10 years old) so there's quite a few random things that could have failed or be failing. Mt Tam I am and Hotrodz like this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \| Last edited by JARblue; 01-22-2021 at 01:37 PM.

01-22-2021, 05:34 PM	#3 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3844	B2631 JARblue likes this. __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

02-04-2021, 03:47 AM	#5 (permalink)
DOOMMONKEY777 A True Z Fanatic Join Date: Sep 2010 Location: Crooklyn Posts: 1,013 Drives: 370Z 6psd-sport-pkg Rep Power: 21	take the spark plugs out and check them for burns and damages also if u have a gap gauge re-gap em if they are fine, the next thing i would look for is a bad coil and a dirty MAF or electrical gremlins. __________________ Kids don't do Drugs, Drugs are bad, so let the professional druggies do Drugs for you. 537whp/496lb/tq@8-9PSI 93 octane Last edited by DOOMMONKEY777; 02-04-2021 at 03:49 AM.

02-06-2021, 03:34 PM	#7 (permalink)
Mt Tam I am A True Z Fanatic Join Date: Jun 2010 Location: California Posts: 10,709 Drives: 370Z T/S/N 6MT & XKE Rep Power: 3844	It was the gas pump. I was not getting fuel. Metal shavings in tank. It runs with full power that had gradually been lost. Thank you for the suggestions. Rusty, Optimiser and Ghostvette like this. __________________ "Does the carpet match the drapes? NO!!! I don't date bald women." Nissan Motorsports 34R Oil Cooler. Stillen CBE. Hotchkis Sport Sway Bars. KW Variant 3 Coilover System. Stillen Gen3 CAI. Michelin Pilot Super Sport. Stillen Brake Ducts. Carbotech™ XP10/XP8 Pads. Z1 Front Rotors. Z1 Stainless Brake Lines. Two degrees of camber

02-04-2021, 03:09 PM	#6 (permalink)
fatso666 Base Member Join Date: May 2020 Location: Florida Posts: 78 Drives: 370z 2009 RSX 2003 Rep Power: 6	i had this code combined with codes P1168, P037, P0057, P0031, P0051, P0150, P0130, changed all four O2 sensors and ALL went away

02-23-2021, 12:24 AM	#8 (permalink)
willdoms Base Member Join Date: Apr 2015 Location: GA Posts: 45 Drives: Nissan 350Z Rep Power: 11	Did you remove the metal shavings in the tank? How?

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