B0404
Temperature Gauge Circuit Malfunction
2005-2009 Saab 9-7X 4.2L I6
Low SeverityBodyGeneric (SAE)
Description
The engine temperature gauge in the instrument cluster is not functioning or reads incorrectly.
Symptoms
- Temperature gauge stuck at cold
- Gauge stuck at hot
- Temperature gauge erratic
- No temperature warning capability
Common Causes
- Faulty coolant temperature sender for gauge
- Cluster gauge failure
- Wiring issue
- Sender connector corroded
Diagnostic Steps
- Check coolant temp sender resistance
- Test gauge with simulated resistance
- Inspect sender connector
- Compare scan tool temp to gauge reading
Repair Notes
Replace coolant temperature sender for gauge (separate from ECT sensor) or repair cluster.
Related Codes
Other Body Codes
- B0001Driver Frontal Stage 1 Deployment Control
- B0002Driver Frontal Stage 2 Deployment Control
- B0003Passenger Frontal Stage 1 Deployment Control
- B0004Passenger Frontal Stage 2 Deployment Control
- B0005Driver Knee Airbag Deployment Circuit
- B0006Passenger Knee Airbag Deployment Circuit
- B0007Rear Left Side Airbag Deployment Circuit
- B0008Rear Right Side Airbag Deployment Circuit
- B0010Driver Side Airbag Deployment
- B0011Driver Side Airbag Deployment Circuit Open
B0404 on Other Vehicles
Common Questions
What does code B0404 mean on a 2005-2009 Saab 9-7X?
B0404 stands for "Temperature Gauge Circuit Malfunction". The engine temperature gauge in the instrument cluster is not functioning or reads incorrectly.
What are the symptoms of B0404 on a Saab 9-7X?
Common symptoms of B0404 include: Temperature gauge stuck at cold, Gauge stuck at hot, Temperature gauge erratic, No temperature warning capability.
What causes B0404 on a 2005-2009 Saab 9-7X?
Common causes of B0404 include: Faulty coolant temperature sender for gauge, Cluster gauge failure, Wiring issue, Sender connector corroded.