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Re: o2 sensor heater circuit malf.
Are there any other codes set?. frist i would look at the map sensor readings. the map sensor reads vauccmn at ilde the engine shows a high vacuumn reading 14 to 21 inches, as the throttle is opended up vacuumn drops, if the sensor dose not responds the pcm will go to a fixed value. which means the o2 sensor will only read what it senses in the exhaust, what you have to remeber is that the o2 sensors are the last sensors to see what and how the mtr is running. if you do not have abilty to look at the data stream you may end up spending more money by replacing parts until you fix it . good luck and let us know what happens
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If the sensors were replaced an DTC'S come back has to be a wiring problem or PCM ,
The ECM detects that the HO2S heater low control circuit voltage is between 2.6-4.6 volts when the heater is commanded OFF, indicating an open HO2S heater circuit.
Is the fuse open?
All four codes refer to the heating element circuit ! there is a relay in the under hood fuse box that supplies B+ voltage to the O2 sensor heating elements . I would change that or test the relay , videos on you tube on testing relays .
LO SPEED Relay, HI SPEED Relay, S/P FAN Relay, PRE O2 Fuse, IGN-1 Fuse, ECM Fuse, POST O2 Fuse, and INJ Fuse
POST O2 Fuse
HO2S Bank 1 Sensor 2 and HO2S Bank 2 Sensor 2
PRE O2 Fuse
Heated Oxygen Sensor (HO2S) Bank 1 Sensor 1 and HO2S Bank 2 Sensor 1
So - you've changed the O2 sensor and still have the same fault.. don't change it again. Instead, look for a problem with the wires between the sensor(s) and the OBD computer. Look for wires that are damaged, melted, chafed, pinched, cut, crushed, etc.
Did you replace the right one ? This code does not necessarily mean the O2 sensor is bad . The code description say O2 heater " CIRCUIT " bank 1 sensor 2 Did you check the wiring , the fuse ?
P0141 - O2 Heater Circuit (Bank 1, Sensor 2)
See the description for DTC P0135.
See the possible causes for DTC P0135.
See the diagnostic aids for DTC P0135.
Key On Engine Off
Key On Engine Running
GO to Pinpoint Test DW .
P0135 - O2 Heater Circuit (Bank 1, Sensor 1)
During testing the heated oxygen sensor (HO2S) heaters are checked for open and short circuits and excessive current draw. The test fails when the current draw exceeds a calibrated limit or an open or short circuit is detected.
Vacuum hose disconnected on exhaust gas recirculation (EGR) system module (ESM) applications
Short to VPWR in the harness or HO2S
Water in the harness connector
Open VPWR circuit
Open GND circuit
Low battery voltage
Corrosion or incorrect harness connections
Damaged HO2S heater
Check the HO2S electrical connector for damage, corrosion, and water intrusion.
Damaged HO2S heater.
Key On Engine Off
Key On Engine Running
GO to Pinpoint Test DW .
Yes there is something in common . Check the fuse # 79 10amp in the underhood fuse box . For O2 sensor , heater power .
The PCM commands the heater ON or OFF to maintain a specific HO2S operating temperature range. The PCM monitors the voltage on the HO2S heater low control circuit for heater fault diagnosis. If the PCM detects that the HO2S heater low control circuit voltage is not within a specified range, DTC P0030 sets for HO2S 1, or DTC P0036 sets for HO2S 2.
So this is not in spec. an it set the other codes !
If the PCM detects that the heater current or the heater calculated resistance is not within an expected range, DTC P0135 sets for HO2S 1
If the PCM detects that the heater current or the heater calculated resistance is not within an expected range, DTC P0141 sets for HO2S 2.
code p2045 refers to reductant temperature sensor--high input==causes --wiring faulty sensor
code p2197 refers to heated oxygen sensor(HO2S)1 bank 2-- signal stuck lean===causes HO2S---fuel pressure---injectors---intake leak
also refers to oxygen sensor (O2s)1 bank 2 -signal stuck lean===causes--O2S--fuel pressure---injectors---intake leak
also refers to heated oxygen sensor (HO2S) 1 bank 2--implausible signal===causes wiring---short to ground--short to positive--HO2S---ECM
code po190 refers to fuel rail pressure (FRP) sensor-circuit malfunction===causes --wiring ---fuel rail pressure sensor---ECM
code p2247 refers to heated oxygen sensor (HO2s) 1 bank 1 reference voltage--open circuit===causes--wiring ---ho2s
also refers to o2s 1 bank 2 reference voltage ---open circuit===causes wiring---o2s
also refers to HO2S 1 bank 2 ---no signal===causes wiring--ho2s---ECM
code p2245 refers to HO2S 1 bank 1 --reference voltage --circuit low===causes--wiring short to ground--ho2s also refers to o2s 1 bank 1 circuit low===causes wiring short to ground--o2s
code p2248 refers to the ho2s I bank --performance problem===causes --wiring--ho2s
code p2249 has the same causes short to ground---ho2s and o2s
code p2518 refers to a/c refrigerant pressure sensor B ---circuit high===causes wiring short to positive--a/c refrigerant pressure sensor.
so after all that replace all the ho2s and o2s sensors using the correct tools so that the wiring is not damaged and check the wiring back to the ECM for burns and rub marks.
Trouble Code: P0060
This HO2S Heater they speak about is the oxygen sensors, it has two of them.Bank 1 is cyls. 1,2,3 from the front of the car 1 is in the back bank 2 is the front 4,5,6. You will find an o2 sensor screwed into each exhaust manifold.
HO2S Heater Resistance (Bank 2, Sensor 2)
VPWR circuit openHO2S heater circuit openHO2S heater circuit short in the harnessDamaged HO2S heater
This fault code refer at Oxygen O2 Sensor Circuit Low Voltage (Bank 2, Sensor 2), and basically means the PCM detected either an excessive current draw, or an open or short in the circuit powering the oxygen sensor's heater circuit. This is in reference to the Heated Oxygen Sensor (2) located rear of catalytic converter (Bank 2).
A code P0161 may mean that one or more of the following has happened:
HO2S heater power circuit open
HO2S heater ground circuit open
HO2S signal tracking (due to oil or moisture in the connector)
HO2S is damaged or has failed PCM has failed
Replace HO2 Sensor
Repair open or short in power circuit
Repair open or short in ground circuit
Repair damaged connector due to tracking
Use this Ford diagram about O2 sensor location...
O2 Sensor 2 Bank 2 = HO2S 2/2 (zoom image link) Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.
It basically means the PCM detected either an excessive current draw, or an open or short in the circuit powering the oxygen sensor's heater circuit. This is in reference to the Heated Oxygen Sensor (2) located rear of catalytic converter (Bank 2).
A code P0161 may mean that one or more of the following has happened: ·HO2S heater power circuit open ·HO2S heater ground circuit open ·HO2S signal tracking (due to oil or moisture in the connector) ·HO2S is damaged or has failed PCM has failed
Possible Solutions ·Replace HO2 Sensor ·Repair open or short in power circuit ·Repair open or short in ground circuit ·Repair damaged connector due to tracking