P0112
IAT Sensor 1 Circuit Low Input
1995-1999 BMW 318ti E36 1.9L I4 🇩🇪
Low SeverityPowertrain
Description
The IAT sensor circuit voltage is lower than expected, indicating a very high temperature or short.
Symptoms
- Check Engine Light
- Rich fuel mixture
- Poor economy
Common Causes
- Short to ground in IAT circuit
- Faulty sensor
- Water intrusion in connector
Diagnostic Steps
- Test sensor resistance
- Check for shorts to ground
- Inspect connector for moisture
Repair Notes
Repair short or replace sensor.
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
P0112 on Other Vehicles
Common Questions
What does code P0112 mean on a 1995-1999 BMW 318ti E36?
P0112 stands for "IAT Sensor 1 Circuit Low Input". The IAT sensor circuit voltage is lower than expected, indicating a very high temperature or short.
What are the symptoms of P0112 on a BMW 318ti E36?
Common symptoms of P0112 include: Check Engine Light, Rich fuel mixture, Poor economy.
What causes P0112 on a 1995-1999 BMW 318ti E36?
Common causes of P0112 include: Short to ground in IAT circuit, Faulty sensor, Water intrusion in connector.