P0170
Fuel Trim Bank 1
1992-1996 BMW 318is E36 1.8L I4 🇦🇺
Moderate SeverityPowertrain
Description
The fuel trim values for Bank 1 are outside the acceptable range, indicating a persistent lean or rich condition.
Symptoms
- Check Engine Light
- Poor fuel economy
- Rough idle
- Hesitation
Common Causes
- Vacuum leak
- Faulty O2 sensor
- Fuel pressure issue
- MAF sensor problem
- Exhaust leak
Diagnostic Steps
- Check long-term fuel trim values
- Inspect for vacuum leaks
- Test fuel pressure
- Test MAF sensor
- Check for exhaust leaks
Repair Notes
Diagnose and correct the underlying lean or rich condition.
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
P0170 on Other Vehicles
Common Questions
What does code P0170 mean on a 1992-1996 BMW 318is E36?
P0170 stands for "Fuel Trim Bank 1". The fuel trim values for Bank 1 are outside the acceptable range, indicating a persistent lean or rich condition.
What are the symptoms of P0170 on a BMW 318is E36?
Common symptoms of P0170 include: Check Engine Light, Poor fuel economy, Rough idle, Hesitation.
What causes P0170 on a 1992-1996 BMW 318is E36?
Common causes of P0170 include: Vacuum leak, Faulty O2 sensor, Fuel pressure issue, MAF sensor problem, Exhaust leak.