need help plz P0135 P0155
need help plz P0135 P0155
hello guys,these two code just went out .did a few test and result:02 sensor heater 4.5ohm and still have 13 volt from ecu to 02 sensor... 02 correction is not responding from my datalog software (continuous 0 value) ,already did a boost leak ,intake leak etc..
can meth destroy 02 sensors?
any help is appreciated
thx

can meth destroy 02 sensors?
any help is appreciated
thx
The codes are for O2 sensor (#1) heater circuit (both banks).
Simply put either the heaters are bad or the wiring is bad, which is in some cases one and the same thing. I note you checked the wiring from the DME to the sensor, at least the voltage, so the sensor heater has juice.
I'd say the heater in the sensor is bad. If the heater is bad the sensor will not work properly as it needs to be hot to work.
For both sensor heaters to fail together suggests a common failure mode and I could believe meth could do it perhaps helped by extremely hard running, with the hard running maybe more to blame.
Even in stock engines O2 sensors have a limited service life and it would not surprise me they had an even shorter service life in mod'd engines.
FYI, though I'm sure you know this already: The #1 sensors are not interchangeable with the #2 sensors. The #1 sensors are wideband, the #2 sensors are narrow band.
Simply put either the heaters are bad or the wiring is bad, which is in some cases one and the same thing. I note you checked the wiring from the DME to the sensor, at least the voltage, so the sensor heater has juice.
I'd say the heater in the sensor is bad. If the heater is bad the sensor will not work properly as it needs to be hot to work.
For both sensor heaters to fail together suggests a common failure mode and I could believe meth could do it perhaps helped by extremely hard running, with the hard running maybe more to blame.
Even in stock engines O2 sensors have a limited service life and it would not surprise me they had an even shorter service life in mod'd engines.
FYI, though I'm sure you know this already: The #1 sensors are not interchangeable with the #2 sensors. The #1 sensors are wideband, the #2 sensors are narrow band.
thx for helping Macster,
did more test already and it look like my 02 sensor heats up well at the touch then playing with the software datalog look like 02 correction is showed up again ..stange <
look like an intermittent issue
i ordered 2 new 17044 sensors and will se next with update
btw engine in not smooth running but no problem for a ride...
will do more test tomorrow
thx again

did more test already and it look like my 02 sensor heats up well at the touch then playing with the software datalog look like 02 correction is showed up again ..stange <
look like an intermittent issue
i ordered 2 new 17044 sensors and will se next with update
btw engine in not smooth running but no problem for a ride...
will do more test tomorrow
thx again

The codes are for O2 sensor (#1) heater circuit (both banks).
Simply put either the heaters are bad or the wiring is bad, which is in some cases one and the same thing. I note you checked the wiring from the DME to the sensor, at least the voltage, so the sensor heater has juice.
I'd say the heater in the sensor is bad. If the heater is bad the sensor will not work properly as it needs to be hot to work.
For both sensor heaters to fail together suggests a common failure mode and I could believe meth could do it perhaps helped by extremely hard running, with the hard running maybe more to blame.
Even in stock engines O2 sensors have a limited service life and it would not surprise me they had an even shorter service life in mod'd engines.
FYI, though I'm sure you know this already: The #1 sensors are not interchangeable with the #2 sensors. The #1 sensors are wideband, the #2 sensors are narrow band.
Simply put either the heaters are bad or the wiring is bad, which is in some cases one and the same thing. I note you checked the wiring from the DME to the sensor, at least the voltage, so the sensor heater has juice.
I'd say the heater in the sensor is bad. If the heater is bad the sensor will not work properly as it needs to be hot to work.
For both sensor heaters to fail together suggests a common failure mode and I could believe meth could do it perhaps helped by extremely hard running, with the hard running maybe more to blame.
Even in stock engines O2 sensors have a limited service life and it would not surprise me they had an even shorter service life in mod'd engines.
FYI, though I'm sure you know this already: The #1 sensors are not interchangeable with the #2 sensors. The #1 sensors are wideband, the #2 sensors are narrow band.
Just in case you don't know (and for anyone searching in the future) that is the pre-cat sensor. The post-cat sensor number is 16205. Best prices I found were at rockauto.
update
just swapped my 02 sensor with new one and still the same !p0130 and p0155 and car run like crap...log show 02 correction working for 5 min then 0 value .... someone has the troubleshooting guide?
can someone help plz
just swapped my 02 sensor with new one and still the same !p0130 and p0155 and car run like crap...log show 02 correction working for 5 min then 0 value .... someone has the troubleshooting guide?
can someone help plz
And about the P0155: I hate these kind of problems because they can be related to a bad tuning…..
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