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I could be very much wrong, but I was under the impression that all the 02 Sensors are pretty much the same (the sensor part), but the connector and the wire length are different for different applications.

I need to PM lextech1 or another tech to confirm the info in this thread is 100% correct.
that is the same thing that i have heard, that they are basically all the same sensors. only the plugs/wire lengths are different
 

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I wish someone with the skillz could help me out with how to fix my P0125 code. I think the diagnostic explanation was miswritten, as I'm 99% sure this has something to do with O2 sensors. There's a thread on the code, but I'd like to see if I could fix it without plopping down five bills for all new sensors.

Anyone?
 

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P0125
Insufficient Coolant Temperature For Closed Loop Fuel Control
I've had that code before at the same time as some o2 sensor ones.........I can't remember what I did to get it or get rid of it though. For some reason I think it just went away when I fixed my o2 problems. added an o2 sim when I put the headers on.


the wrong tone--What's your exhaust system like? headers? y-pipe? axle-back?
 

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Megan header, stock y, HKS Ti Limited axle-back.

I never installed my O2 sim, we just secured the after cat sensor to a hardline. The code came on after installing my header. One of my O2 sensors was seized up, so I had to buy a universal. I reckon I'll just have to replace that one with an OE unit. I'll try installing the O2 sim first, I just lack the soldering skills.
 

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Now that I'm thinking about it, I think I may have already switched out for a stock sensor. The clearance is fine, I had my local shop move the B2S1 bung.
 

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my wife took the car in for the cell code it was P0037.
they told her it was an o2 sensor does anyone know which one that is and where i can get it for the most affordable price.

thanks
 

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P0100
MAF Malfunction

P0101
MAF Circuit Range/Performance

P0110
IAT Circuit Malfunction

P0115
ECT Circuit Malfunction

P0116
ECT Circuit Range/Performance

P0120
TP Position Sensor/Switch ‘‘A’’ Circuit Malfunction

P0121
TP Position Sensor/Switch ‘‘A’’ Circuit Range/Performance

P0125
Insufficient Coolant Temperature For Closed Loop Fuel Control

P0130
HO2S Circuit Malfunction, Bank 1 Sensor 1

P0133
HO2S Circuit Slow Response, Bank 1 Sensor 1

P0135
HO2S Heater Circuit Malfunction, Bank 1 Sensor 1

P0136
HO2S Circuit Malfunction, Bank 1 Sensor 2

P0141
HO2S Heater Circuit Malfunction, Bank 1 Sensor 2

P0150
HO2S Circuit Malfunction, Bank 2 Sensor 1

P0153
HO2S Circuit Slow Response, Bank 2 Sensor 1

P0155
HO2S Heater Circuit Malfunction, Bank 2 Sensor 1

P0156
HO2S Sensor Circuit Malfunction, Bank 2 Sensor 2

P0161
HO2S Heater Circuit Malfunction, Bank 2 Sensor 2

P0170
Fuel Trim Malfunction

P0171
System Too Lean (Fuel Trim)

P0172
System Too Rich (Fuel Trim)

P0174
System Too Lean (A/F Lean Malfunction, Bank 2)

P0175
System Too Rich (A/F Rich Malfunction, Bank 2)

P0300
Random Misfire Detected

P0301
Misfire Detected, Cylinder 1

P0302
Misfire Detected, Cylinder 2

P0303
Misfire Detected, Cylinder 3

P0304
Misfire Detected, Cylinder 4

P0305
Misfire Detected, Cylinder 5

P0306
Misfire Detected, Cylinder 6

P0307
Misfire Detected, Cylinder 7

P0308
Misfire Detected, Cylinder 8

P0325
KS 1 Circuit Malfunction

P0330
KS 2 Circuit Malfunction

P0335
CKP Sensor ‘‘A’’ Circuit Malfunction

P0340
CMP Circuit Malfunction

P0385
CKP Sensor ‘‘B’’ Circuit Malfunction

P0401
EGR Insufficient Flow

P0402
EGR Excessive Flow

P0403
EGR Circuit Malfunction

P0420
Catalyst System Efficiency Below Threshold Bank 1

P0430
Catalyst System Efficiency Below Threshold Bank 2

P0440
EVAP Emission Control System Malfunction

P0441
EVAP Emission Control System Improper Purge Flow

P0446
EVAP Emission Control System Vent Control Malfunction

P0450
EVAP Emission Control System Pressure Switch Malfunction

P0451
EVAP Control System Pressure Sensor Range/Performance

P0500
VSS Malfunction

P0505
Idle Control System Malfunction

P0510
Closed TP Switch Malfunction

P0550
Power Steering Pressure Sensor Circuit Malfunction

P1100
BARO Sensor Circuit Malfunction

P1120
Accelerator Pedal Position Sensor Circuit Malfunction

P1121
Accelerator Pedal Position Sensor Range/Performance Problem

P1125
Throttle Control Motor Circuit Malfunction

P1126
Magnetic Clutch Circuit Malfunction

P1127
ECTS Actuator Power Source Circuit Malfunction

P1128
Throttle Control Motor Lock Malfunction

P1129
Electronic Throttle Control System

P1130
Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (Bank 1 Sensor 1)

P1133
Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 1 Sensor 1)

P1135
Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P1150
Air/Fuel Ratio Sensor Circuit Range/Performance Malfunction (Bank 2 Sensor 1)

P1153
Air/Fuel Ratio Sensor Circuit Response Malfunction (Bank 2 Sensor 1)

P1155
Air/Fuel Ratio Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)

P1200
Fuel Pump Relay/ECU Circuit Malfunction

P1300
Igniter Circuit Malfunction (Bank 1 Or No. 1)

P1305
Igniter Circuit Malfunction, (Bank 2 Or No. 2)

P1310
Igniter Circuit Malfunction (No. 3)

P1315
Igniter Circuit Malfunction (No. 4)

P1320
Igniter Circuit Malfunction (No. 5)

P1325
Igniter Circuit Malfunction (No. 6)

P1330
Igniter Circuit Malfunction (No. 7)

P1335
CKP Sensor Circuit Malfunction During Engine Running

P1340
Igniter Circuit Malfunction (No. 8)

P1345
VVT Sensor Circuit Malfunction (Bank 1)

P1346
VVT Sensor Rang/Performance Problem (Bank 1)

P1349
VVT System Malfunction (Bank 1)

P1350
VVT Sensor Circuit Malfunction (Bank 2)

P1351
VVT Sensor Range/Performance Problem (Bank 2)

P1354
VVT System Malfunction (Bank 2)

P1400
Sub-TP Sensor Malfunction

P1401
Sub-TP Sensor Range/Performance

P1410
EGR Valve Position Sensor Circuit Malfunction

P1411
EGR Valve Position Sensor Circuit Range/Performance Malfunction

P1500
Starter Signal Circuit Malfunction

P1520
Stop Lamp Switch Malfunction

P1565
Cruise Control Main Switch Circuit Malfunction

P1566
Cruise Control Main Switch Circuit Malfunction

P1600
ECM BATT Malfunction

P1605
Knock Control CPU Malfunction

P1633
ECM Malfunction (ETCS Circuit)

P1645
Body ECU Malfunction

P1656
OCV Circuit Malfunction (Bank 1)

P1663
OCV Circuit Malfunction (Bank 2)

P1780
PNP Switch Malfunction

B2785
Ignition Switch On Malfunction (Immobilizer System)

B2786
Ignition Switch Off Malfunction (Immobilizer System)

B2785
Ignition Switch On Malfunction (Immobilizer System)

B2791
Key Unlock Warning Switch Malfunction (Immobilizer System)

B2795
Unmatch Key Code (Immobilizer System)

B2796
No Communication In Immobilizer System

B2797
Communication Malfunction No. 1 (Immobilizer System)

B2798
Communication Malfunction No. 2 (Immobilizer System)
 

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It the lower one on the pipe closest to the front of the car. you can open up the ECU box, find the "o2 sensor heater" wires and tap them together.
 

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Oddly enough i like to keep my eye out for failed B1S2 and B2S2 O2s that have failed.....I want their harness to wire a sim up to when I put a header on lol
 

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241 Posts
this is the second o2 sensor right.
could there be anything i could try befor replaceing the sensor?
could it be possible that a loose conection can cause this to show cel
because i was feeling around the carpet to find the wire and when i went to get back in the car and the cel was off
 

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254 Posts
the o2 codes seem to be "soft codes" so they go on an off. for like a week my CEL would only come on once every 3 or 4 times I drove the car. It resets it self when the car is turned off.
 

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Discussion Starter #40
Link is working now.

CEL lights will cycle on and off, depending how many starts and/or miles, but usually the problem doesn't fix itself. Getting your code read is the easiest way to know for sure.
 
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