O2 Sensor - Bank 1 Downstream
1972 Dodge Challenger · 318ci V8
Sensor Type
not-equipped
Waveform Type
not-applicable
Location
Not applicable - 1972 Dodge Challenger has no catalytic converter or downstream oxygen sensors
Pins
Unknown
Timebase
N/A
Voltage Scale
N/A
Trigger
N/A
Wiring
Not applicable
Expected Voltage Range
At Idle
0V to 0V
At Higher RPM
0V to 0V
Expected Pattern
Not applicable - no catalytic converter monitoring on 1972 vehicles
Known-Good Waveform
The 1972 Dodge Challenger 318ci does not have catalytic converters or downstream oxygen sensors. Federal emissions regulations requiring catalytic converters and oxygen sensor feedback control did not take effect until the 1975-1981 model years depending on vehicle class.
Common Failure Patterns
Not applicable
Cause: Sensor not present on this vehicle
Diagnostic Tips
Exhaust system diagnostics should focus on leak detection, manifold gasket condition, heat riser valve operation (if equipped), and ensuring proper backpressure for optimal performance.
Related Diagnostic Trouble Codes
P0136P0137P0138P0139P0140
Always confirm waveform data with your vehicle's OEM service manual before diagnosing.
Free, no signup. View all waveforms for this vehicle