O2 Sensor - Bank 1 Upstream
1972 Dodge Challenger · 400ci V8
Sensor Type
not-applicable
Waveform Type
not-applicable
Location
Not equipped - 1972 Dodge Challenger predates catalytic converters and oxygen sensors
Pins
Unknown
Timebase
N/A
Voltage Scale
N/A
Trigger
N/A
Wiring
N/A - No emissions feedback system
Expected Voltage Range
At Idle
0V to 0V
At Higher RPM
0V to 0V
Expected Pattern
Not applicable - no closed-loop fuel control system
Known-Good Waveform
The 1972 Dodge Challenger was manufactured before federal catalytic converter and oxygen sensor mandates (1975 model year). Air-fuel mixture is controlled mechanically through carburetor jetting, power valve, and choke operation.
Common Failure Patterns
No sensor present on this vehicle
Cause: Pre-emissions control era vehicle
Diagnostic Tips
Diagnose fuel mixture using tailpipe emissions analyzer, vacuum gauge readings, and spark plug color analysis. Typical idle mixture should produce 14.2-14.7:1 AFR for best economy or 12.5-13.5:1 for power.
Related Diagnostic Trouble Codes
P0130P0131P0132P0133P0134
Always confirm waveform data with your vehicle's OEM service manual before diagnosing.
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