Error code
OBD2 P0A04
OBD2P0A04
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Motor Electronics Coolant Temperature Sensor Circuit Intermittent.
Severity
moderateCan drive but monitor the issue closely as it may worsen.
Summary
P0A04 indicates an intermittent issue with the motor electronics coolant temperature sensor circuit, which monitors engine coolant temperature.
Common Causes
- Faulty coolant temperature sensor
- Loose or corroded wiring harness connections
Fixes
- Replace faulty coolant temperature sensor and inspect wiring harness connections.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P0A00Motor Electronics Coolant Temperature Sensor Circuit
- P0A01Motor Electronics Coolant Temperature Sensor Circuit Range/Performance
- P0A02Motor Electronics Coolant Temperature Sensor Circuit Low
- P0A03Motor Electronics Coolant Temperature Sensor Circuit High
- P0A05Motor Electronics Coolant Pump Control Circuit/Open
- P0A06Motor Electronics Coolant Pump Control Circuit Low
- P0A07Motor Electronics Coolant Pump Control Circuit High
- P0A08DC/DC Converter Status Circuit
- P0A09DC/DC Converter Status Circuit Low Input
- P0A10DC/DC Converter Status Circuit High Input
- P0A11DC/DC Converter Enable Circuit/Open
- P0A12DC/DC Converter Enable Circuit Low