Question about 2002 Nissan Altima

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Check engine light on code p1800 amd p650 is it

Check engine light on code p1800 amd p650 is it transmission or some thing else? How do i fix it?

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CODE PO1800 VIAS CONTROL SOLENOID VALVE CIRCUIT. I DID NOT SEE CODE PO650 BUT CODE PO1800 IS A FAULTY VIAS CONTROL SOLENOID VALVE.

Posted on Apr 23, 2010

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My 05 Altima 3.5L popped up ABS, O2sensor, P1800 &P1273 frm the Auto Scan what do these mean & how to fix them?


P1800 is the VIAS system. Most likely the intake runner control vacuum actuator is defective. Where did you get the ABS info?
P1273 NISSAN - Air Fuel Ratio Sensor 1 Bank 1 Lean Shift Monitoring.
Possible causes - Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
-Intake manifold or vacuum hose leaking (check this first)
- Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
- Air fuel ratio (A/F) Sensor 1 Bank 1 circuit poor electrical connection
- Fuel pressure
- Faulty Fuel injector
- Faulty Air Flow Meter
If all seems ok then replace the cylinder bank number one O2 sensor and the bank two sensor, replacing only one sensor can lead to another check engine light. These are the sensors before the catalytic converter.

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Nissan maxima p1800 code and transmission issues, related??


Clean or replace the mass air flow sensor , clear codes and road test

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Call a Nissan dealer to see if there is a recall on your car. That problem has been addressed with recalls a couple of times.

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code p1800 refers to engine torque signal ---malfunction===causes--wiring ---TCM (transmission control module).
replace the TCM

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code P1800 VIAS control solenoid valve circuit.

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if you need a tool you can click here: spobd2.com

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What is a kia rio p1800 error code mean?


the code is for engine torque signal malfunction.its either a short to voltage or ground in between engine computer and transmission computer. or a bad trans computer [tcm] manuel says check for shorts or bad connections at the connectors from ecm to tcm then states if no wire problems found then try a new tcm and if problem goes away then install new tcm.i know those instructions are lame but it comes from the kia service manuel. there are no tsb or recalls listed for that code. so i would recomend take to dealer because they would have a known good tcm to try.plus if you bought the car new then the 10 year 100,000 mile warranty may still be in effect beings how its a powertrain issue so if less than 100,000 miles and you bought it new it wouldnt hurt to ask them if it might be covered

May 29, 2010 | 2002 Kia Rio

3 Answers

Hi i have 02 altima 3.5 v6 who have check engine light with code p1800 what is manufactured transmission control can anyone help me what that means?


You may want to have someone else take a look at it. The Nissan P1800 trouble code is not a transmission control problem. It is described as follows:

Trouble diagnosis name: VIAS control solenoid valve circuit.
Component Description:
The VIAS control solenoid valve cuts the intake manifold vacuum signal for power valve control. It responds to ON/OFF signals from the ECM. When the solenoid is off, the vacuum signal from the intake manifold is cut. When the ECM sends an ON signal the coil pulls the plunger downward and feeds the vacuum signal to the power valve actuator.
DTC detecting condition:
•An excessively low or high voltage signal is sent to ECM through the valve.
Possible cause:
•Harness or connectors (The solenoid valve circuit is open or shorted.)
•VIAS control solenoid valve

Check your vacuum hoses to make sure they are in good shape and are securely attached Aslo check the wiring harness is ok and securely attached as well. If they are, you’ll probably need to replace your VIAS. It's right next to the throttle body.

Jan 25, 2010 | 2002 Nissan Altima

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