P0142low severityPowertrain
O2 Sensor Circuit (Bank 1 Sensor 3)
on 2007 Ram 3500 5.9L I6 Cummins · 4WD
What this code means
A general circuit fault was detected on the third oxygen sensor on bank 1. This affects emissions monitoring on that bank.
Symptoms
- Check engine light on
- Failed emissions test
- Slightly reduced fuel economy
Common causes
- Faulty oxygen sensor
- Damaged sensor wiring
- Corroded connector
- Exhaust leak near sensor
Diagnostic steps
- Scan for O2 sensor codes
- Inspect sensor wiring and connector
- Check for exhaust leaks
- Replace oxygen sensor if faulty
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1