P0203 advice needed

Forum for Engine, Exhaust, Drivetrain, ECU
BeckyG
Posts: 13
Joined: Fri May 07, 2021 10:37 am
Qashqai Model: Mk.1 Qashqai - J10 (2006–2013)

Post by BeckyG »

Hi. Thanks for the replys.

I have everything documented. I have booked it in for a full diagnostic by a Nissan specialist so I will get a report and repair cost. At least then I will know where I stand with the car.
The letter I sent them rejecting the car bounced back saying no longer at this address so I think I'm going to have a fight on my hands 🙄

BeckyG
Posts: 13
Joined: Fri May 07, 2021 10:37 am
Qashqai Model: Mk.1 Qashqai - J10 (2006–2013)

Post by BeckyG »

So the car has been for the diagnostic report doing.
They have brought up the same codes P0203 and P1525
They have also picked up C1131 and C1132.
Anybody ever had this combination.

EML still hasn't come back on yet!
User avatar
calnorth
Posts: 2719
Joined: Mon Feb 11, 2019 2:01 pm
Qashqai Model: Mk.2 Qashqai Facelift - J11b (2017–2021)

Post by calnorth »

C1131 & 32 relate to communication errors between the ECU and ABS system. Possibly wiring harness or plug/socket fault?

It would need further ECU and ABS self diagnosis to pinpoint an exact fault.

Did the tester try to clear them?
Mk2 Qashqai Facelift - J11b (2017–and onward)
1.6 Dig-T N-Connecta
BeckyG
Posts: 13
Joined: Fri May 07, 2021 10:37 am
Qashqai Model: Mk.1 Qashqai - J10 (2006–2013)

Post by BeckyG »

He left the codes on.
I asked his opinion on what it needs for repair and he said all 4 injectors need replacing 😳
Surely the car wouldn't be driving OK if this was the case!
I'm at a loss what to do for the best of they refuse to take the car back and refund me.
BeckyG
Posts: 13
Joined: Fri May 07, 2021 10:37 am
Qashqai Model: Mk.1 Qashqai - J10 (2006–2013)

Post by BeckyG »

Update... Dispute still ongoing, still no response from them.
Spoke to the Garage that the dealer took the car to for the first repair. He said he put on a second hand part. When asked who supplied the part he said nobody because he already had one 🤦🏻‍♀️
Brad120688
Posts: 2
Joined: Sun Jun 06, 2021 11:26 pm
Qashqai Model: Mk.1 Qashqai Facelift - J10b (2010–2013)

Post by Brad120688 »

Hi all,

After owning my 61 plate for 3 years(without any issues) I have the same problem. Red EML, 2 yellow lights bottom right and car begins to misfire. It comes and goes as it pleases but it is definitely down on power the majority of the time.

ODB2 reading says cylinder 4 injector circuit open, at first I thought this is probably a bad injector, however as it's an intermittent issue I doubt this. After doing some research online I found people have sprayed some contact cleaner on the injector lead plugs (in front of the air filter). Then give it 15 minutes to evaporate and plug the leads back in.

Hoping this solves the issue, as although they're not majorly expensive (go to Renault instead) it's still an expense and from what I've read it hasn't really solved the issue completely.

Will give this a try tomorrow and report back to you!
Brad120688
Posts: 2
Joined: Sun Jun 06, 2021 11:26 pm
Qashqai Model: Mk.1 Qashqai Facelift - J10b (2010–2013)

Post by Brad120688 »

This is the video I saw:
Oily Rag
Posts: 2
Joined: Sun Jun 13, 2021 8:13 pm
Qashqai Model: Mk.1 Qashqai Facelift - J10b (2010–2013)

Post by Oily Rag »

Hi,
I had a simular problem with a 2012 J10 1,5 dci, red lamp, limp mode, only ran on 3 cyl. P0204. Deleting the code worked for some months, then returned. Did this for about 2 years. Then the code returned imediatly. Inj measured ohm was way off, replaced the injector and the engine started to knock. I then got a code for injector 1 that didn't triggered the lamp, but indicated that the injector was either faulty coded or bad. Coding was correct, so I replaced inj 1. Then the engine knock was gone ( but still a k9k ), more power and no codes. Engine oil was a bit fuel dilluted, so changed that after the repair.
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