O2 Sensor 1/1 Slow During Catalytic Monitor
2004-2004 Dodge Dakota 4.7L V8
The 2004 Dodge Dakota is equipped with a 4.7L V8 engine. Below you'll find detailed p1195 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The PCM has detected that the upstream oxygen sensor on Bank 1 is responding too slowly during the catalytic converter efficiency monitor. The sensor switching rate is below the threshold needed for accurate catalyst monitoring.
Symptoms
- Check Engine Light
- Failed emissions test
- Slightly reduced fuel economy
- Possible rough idle
Common Causes
- Aging or contaminated upstream O2 sensor
- Exhaust leak near the O2 sensor
- Wiring issue causing signal delay
- Fuel contamination affecting sensor response
- Catalytic converter deterioration affecting sensor readings
Diagnostic Steps
- Monitor O2 sensor switching frequency on scan tool (should switch rapidly at steady cruise)
- Inspect O2 sensor wiring for damage or high resistance
- Check for exhaust leaks near sensor location
- Compare sensor response time to specification
- Inspect catalytic converter condition
Repair Notes
Replace the upstream O2 sensor Bank 1 if response time exceeds specification.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P1195 on Other Vehicles
Common Questions
What does code P1195 mean on a 2004-2004 Dodge Dakota?
P1195 stands for "O2 Sensor 1/1 Slow During Catalytic Monitor". The PCM has detected that the upstream oxygen sensor on Bank 1 is responding too slowly during the catalytic converter efficiency monitor. The sensor switching rate is below the threshold needed for accurate catalyst monitoring.
What are the symptoms of P1195 on a Dodge Dakota?
Common symptoms of P1195 include: Check Engine Light, Failed emissions test, Slightly reduced fuel economy, Possible rough idle.
What causes P1195 on a 2004-2004 Dodge Dakota?
Common causes of P1195 include: Aging or contaminated upstream O2 sensor, Exhaust leak near the O2 sensor, Wiring issue causing signal delay, Fuel contamination affecting sensor response, Catalytic converter deterioration affecting sensor readings.
Last updated: March 2026