P2237moderate severityPowertrain
O2 Sensor Positive Current Control Circuit/Open (Bank 1 Sensor 1)
on 2008 Dodge Viper 8.4L V10 · RWD
What this code means
The PCM detects an open in the positive current control circuit for the upstream O2 sensor on bank 1. This prevents proper air-fuel measurement.
Symptoms
- Check engine light on
- Poor fuel economy
- Rough running engine
Common causes
- Open in O2 sensor pump cell wiring
- Faulty wide-band O2 sensor
- Corroded sensor connector
- PCM control circuit fault
Diagnostic steps
- Scan and record freeze frame data
- Inspect O2 sensor connector and wiring
- Check for open in control circuit
- Replace O2 sensor if wiring is intact
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