O2 Sensor - Bank 1 Downstream
1972 Dodge Challenger · 383ci V8
Sensor Type
not-applicable
Waveform Type
not-applicable
Location
Not equipped - 1972 Dodge Challenger 383ci has no catalytic converters or catalyst monitoring system
Pins
Unknown
Timebase
N/A
Voltage Scale
N/A
Trigger
N/A
Wiring
Not applicable - downstream O2 sensors not required until OBD-II in 1996
Expected Voltage Range
At Idle
0V to 0V
At Higher RPM
0V to 0V
Expected Pattern
Not applicable - no catalytic converter monitoring
Known-Good Waveform
The 1972 383ci engine has no downstream oxygen sensors or catalytic converters. Exhaust system consists of cast iron manifolds, head pipes, mufflers, and tailpipes only, with no emission aftertreatment devices requiring monitoring.
Common Failure Patterns
Not applicable
Cause: Sensor does not exist on this vehicle
Diagnostic Tips
For exhaust system diagnosis on this vehicle, check for leaks at manifold gaskets and pipe connections, inspect for restriction, and verify proper heat riser valve operation if equipped with single exhaust system.
Related Diagnostic Trouble Codes
P0136P0137P0138P0139P0140
Always confirm waveform data with your vehicle's OEM service manual before diagnosing.
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