O2 Sensor - Bank 1 Upstream
1972 Dodge Challenger · 225ci I6
Sensor Type
not-applicable
Waveform Type
not-applicable
Location
Not equipped - 1972 Dodge Challenger predates catalytic converter and oxygen sensor requirements
Pins
Unknown
Timebase
N/A
Voltage Scale
N/A
Trigger
N/A
Wiring
Not applicable - oxygen sensors not introduced until mid-1970s emissions vehicles
Expected Voltage Range
At Idle
0V to 0V
At Higher RPM
0V to 0V
Expected Pattern
Not applicable - fuel mixture controlled mechanically by carburetor jetting and metering rods
Known-Good Waveform
The 1972 model year predates federal oxygen sensor requirements by approximately 5-8 years. This vehicle has no catalytic converter and no closed-loop fuel control, relying entirely on carburetor calibration for air/fuel mixture.
Common Failure Patterns
Not applicable
Cause: Sensor does not exist on this vehicle
Diagnostic Tips
Air/fuel mixture diagnosis requires exhaust gas analyzer or spark plug reading. Adjust carburetor mixture screws and check metering rod spring tension for proper fuel delivery across operating ranges.
Related Diagnostic Trouble Codes
P0130P0131P0132P0133P0134
Always confirm waveform data with your vehicle's OEM service manual before diagnosing.
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