P0141 Fault Code even after replacing the Lambda Sensor

[bernie bhoy]

Hi,


Can anyone help me please? I was informed by a garage that I had a faulty lambda sensor (post cat) so I replaced it with a Bosch universal lambda sensor, unfortunatley my MIL is still lit so I boight an OBD11 and got the fault code P0141. I've checked all the connections and everything seems fine, has anyone else seen this problem before or could offer some help please?

[Sh4rkattk]

Try checking your fuses.

[apk919]

Originally Posted by bernie bhoy

Hi,


Can anyone help me please? I was informed by a garage that I had a faulty lambda sensor (post cat) so I replaced it with a Bosch universal lambda sensor, unfortunatley my MIL is still lit so I boight an OBD11 and got the fault code P0141. I've checked all the connections and everything seems fine, has anyone else seen this problem before or could offer some help please?

Assuming that you've replaced your oxygen sensor with the correct unit, that fault indicates that there's something wrong with the amount of current being drawn by the sensor's heating element. If the element is good, then you've likely got a wiring/connector problem.

From the service manual:

P0141
Set when the sensor output is greater than 1900mA or less than 250mA for 1.5 seconds, for 40 consecutive
checks.
Enable Criteria: Engine run time > 60 seconds
Monitor: Continuous
Potential failure modes:
Sensor connector and wiring should be checked for corrosion and loose connections
Notes:
• The MIL will be illuminated if the fault is present for 2 consecutive trips.
• Further information on the sensor may be found in Toyota 1ZZ-FE, 2ZZ-GE manual RM733E (B120T0327J)
pages DI-63 to DI-66

[charliex]

if its heat circuit, connector and wiring, check that the o2 sensor is getting power.

check R5 in the engine bay (its the outside most 5AMP directly next to the 7.5AMP in the rear fuse box)



Colour Code
B = Black
G = Green
K = Pink
LG = Light Green
N = Brown
O = Orange
P = Purple
R = Red
S = Slate
U = Blue
W = White
Y = Yellow

[bernie bhoy]

Thanks for your help, I'll be trying your suggestions tomorrow night and I'll let you know how I get on... thanks again