When I turn ignition on, the FI light flashes 2 times slow then 3 times fast. Stops then repeats. I've checked out the error codes and it says it could be a Faulty O2 sensor heater
Heater is part of the 02 sensor. Replace sensor
Year make and model ??
SOURCE: i have error codes p0156 p0161
Check the wire harness near the top of the engine in the rear. They were good for rubbing through on the trans fill tube bracket. Judging by the code you have 4 sensors. you would be interested in the drivers side rear sensor.
SOURCE: Fiesta Diesel (Y Reg) intermittent starting(flashing immobiliser)
diesel ,,,just bypass the immobiliser ,20mins work
SOURCE: Code: P0133 - O2 Sensor Circuit Slow Response Bank 1 Sensor 1
is this a 4 or 6 cylinder?
if a 4 cylinder it will only have 2 o2 sensors
V6 will have 4 o2 senors which the sensor will be the right side of the engine first sensor.
1st sensor on exhaust, I recommend if you change one change all, as this will make the computer when it rechecks the system you have all clean/fast responding sensors.
if you have a slow response it means the sensor is dirty and not reading well, which is usually caused by minor misfires that the engine computer dismisses, so a tune up would be recommended too.
SOURCE: Code P0141. O2 Sensor heater circuit fault (Bank1,
It is probably the sensor before the cat. if it has a heater. The heater circuit going bad is a common problem, it does not affect the way the car runs after it warms up, it is an emission device to heat the O2 sensor up quicker than the hot exhaust gas would. It should be replaced because it will keep your check engine light on and you would not be able to pass an emission test.
SOURCE: have this code PO171, what does this mean.
Not sure that the O2 sensor was bad. It sounds like it was telling you that side of the exhaust system was picking up a lean mixure at the O2 sensor. The O2 sensor was doing its job by telling you the mixture changed. If the O2 sensor was bad, it would say low voltage range for that sensor, or open curcuit.
Now the car has had time to do its diagnostic sweep, it is telling you the same thing, but from a different sensor...the fuel mix is too lean. Air/spark/and fuel is what you need in the correct amounts. In your car, the ECM engine control module controls this by taking readings from all the sensors several hundred times a second.
Mechanically, you have a few options. Change the fuel filter...under the car on the passenger side. It is an easy job.
Change the fuel pressure regulator. This keeps the fuel at 4 BAR so the fuel injectors can do their job correctly. This job just needs a screw driver to pop off the clip that holds it in place. No hoses need to be removed. It is on top of the intake manifold, in-line with a metal fuel line and a rubber one.
The fuel injectors could be clogged up on one side of the engine. Run some fuel injector cleaner through a tank of gas. Also, listen for a constant ticking sound at each injector. If one sounds off PAR, then replace it.
The fuel pump may not be giving you enough power. However, the readings seem to be localized to one side, so I doubt it.
Start with the easiest thing, and see if it works. Also, you will need to get yourself a VAG scan tool. It is the only one with codes in it for all of your VW systems, not just engine codes like the ODB scanners. You can get a nice one for $50 on-line.
Good Luck!
Generic OBD II Diagnostic Trouble Codes
DTC CODES P0200 to P0299
P0200....Injector Circuit
P0201....Injector Circuit - Cylinder 1
P0202....Injector Circuit - Cylinder 2
P0203....Injector Circuit - Cylinder 3
P0204....Injector Circuit - Cylinder 4
P0205....Injector Circuit - Cylinder 5
P0206....Injector Circuit - Cylinder 6
P0207....Injector Circuit - Cylinder 7
P0208....Injector Circuit - Cylinder 8
P0209....Injector Circuit - Cylinder 9
P0210....Injector Circuit - Cylinder 1
P0211....Injector Circuit - Cylinder 11
P0212....Injector Circuit - Cylinder 12
P0213....Cold Start Injector 1
P0214....Cold Start Injector 2
P0215....Engine Shutoff Solenoid
P0216....Injector/Injection Timing Control Circuit
P0217....Engine Coolant Over Temperature Condition
P0218....Transmission Fluid Over Temperature Condition
P0219....Engine Over Speed Condition
P0220....Throttle/Pedal Position Sensor/Switch 'B' Circuit
P0157....O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
P0158....O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
P0159....O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
P0160....O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P0161....O2 Sensor Heater Circuit (Bank 2 Sensor 2)
P0162....O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)
P0163....O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
P0164....O2 Sensor Circuit High Voltage (Bank 2 Sensor 3)
P0165....O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
P0166....O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
P0167....O2 Sensor Heater Circuit (Bank 2 Sensor 3)
P0168....Fuel Temperature Too High
P0169....Incorrect Fuel Composition
P0170....Fuel Trim (Bank 1)
P0171....System too Lean (Bank 1)
P0172....System too Rich (Bank 1)
P0173....Fuel Trim Malfunction (Bank 2)
P0174....System too Lean (Bank 2)
P0175....System too Rich (Bank 2)
P0176....Fuel Composition Sensor Circuit
P0177....Fuel Composition Sensor Circuit Range/Performance
60 views
Usually answered in minutes!
Honda vtx 1800c 2003.
×