What does it mean?
P2181 is a Fuel and Air Metering fault code. It indicates: Engine coolant heater failure, Engine coolant level is too low, Thermostat failure.
Engine coolant heater failure, Engine coolant level is too low, Thermostat failure
Severity
Medium
Can I keep driving?
Usually drivable, but get it diagnosed without delay.
How is this code read?
This is a standard OBD-II code; any basic scanner reads it on vehicles built after 2004.
- PPowertrain
- 2Generic code
- 1Fuel / Air
- 81Sequence number
Codes From the Same System
All Fault Codes- P0000No trouble code
- 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
- P0005Fuel Shutoff Valve Control Circuit / Open
- P0006Fuel Shutoff Valve Control Circuit Low
- P0007Fuel Shutoff Valve Control Circuit High
Related Similar Codes
- P2180System Too Rich Off Idle Bank 2
- P2182Engine Coolant Temperature Sensor 2 Circuit
- P2183Engine Coolant Temperature Sensor 2 Circuit Range/Performance
- P2184Engine Coolant Temperature Sensor 2 Circuit Low
- P2185Engine Coolant Temperature Sensor 2 Circuit High
- P2186Engine Coolant Temperature Sensor 2 Circuit Intermittent/Erratic
- P2187System Too Lean at Idle Bank 1
- P2188System Too Rich at Idle Bank 1
This information follows the generic OBD-II definition and does not replace a vehicle-specific diagnosis. The severity rating is rule-based; an authorised diagnostic reading is required for a definitive answer.