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.
When I took it to Advance they put the Auto scan tool on it & he said ABS, O2 sensor & codes P1800 & P1273... The AbS light is on as well as the check engine light... & 1 more thing where is the o2 sensor bank 1 & bank 2 located on a 05 Nissan Altima 3.5L? Thanks
P1800 is not an ABS fault code, those guys are not trained tech's so ignore them. P1273 is an O2 fault code, so they got one right.
So is the O2 sensor on the front bottom part of my engine (the greyish hot part)
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SOURCE: hi i have 02 altima 3.5 v6 who have check engine
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.
SOURCE: what is a kia rio p1800 error code mean?
P1800
Engine torque signal malfunction
Threshold Value ~ Circuit continuity: Open or shorted
Enable Conditions ~ NA
Time Requirements ~ Continuous
MIL Illumination ~ No MIL illumination
Related Items
1)Open between TCM (C221-41) and ECM (C254-68).
2)Short to B+ or GND between C221-41 and C254-68.
STEP
INSPECTION
Y/N
ACTION
1
With ignition off, disconnect C254 from ECM and C221 from TCM. Measure resistance between C221-41 and C254-68 (less than 1 ohm).
Is resistance as specified?
YES
Go to step 2.
NO
Locate source of open or high resistance and repair as necessary.
2
Measure resistance between C254-68 and GND (infinite resistance).
Is resistance as specified?
YES
Go to step 3.
NO
Locate source of short to GND and repair as necessary.
3
Turn ignition on and measure voltage at C254-68 (0v).
Is voltage as specified?
YES
Thoroughly check for loose, bent or corroded terminals in circuit than go to step 4.
NO
Locate source of short to B+ and repair as necessary.
4
Clear codes and return vehicle to original condition. Verify any repairs by driving vehicle with KIA Data Pro connected to OBD-II connector and monitoring for pending codes (refer to section 3 of the KIA Data Pro Generic OBD-II Program Card reference manual).
If you need further help, reach me via phone at https://www.6ya.com/expert/joel_63c670a84e9f6a97
SOURCE: i have a 05 nissan
Bad o2 sensor heater circuit. Check for damaged wiring to sensor first, if undamaged replace sensor.
SOURCE: Code p1273 on a 2005 Nissan altima
Robert, Code P1273 Air Fuel Ratio, Sensor 1 Lean, Shift Monitoring Bank 1
See links below for trouble shooting and fix.
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P1273 Nissan Air Fuel Ratio Sensor 1 Lean Shift Monitoring Bank 1
The dreaded P1273 Code 2005 2 5S
p1273 Nissanhelp com Forums
https://ca.answers.yahoo.com/question/index?qid=20140225092422AAZkNxF
Hopefully this link will tell you what you need.
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