P0094high severityPowertrain
Fuel System Leak Detected - Small Leak
on 2002 Toyota Highlander 2.4L I4 · AWD
What this code means
The engine computer detected a small leak in the high-pressure fuel system. This can cause hard starting, rough running, and reduced power.
Symptoms
- Hard starting
- Rough running or misfire
- Reduced engine power
Common causes
- Leaking fuel injector
- Cracked high-pressure fuel line
- Faulty fuel pressure sensor
- Loose fuel line connection
Diagnostic steps
- Inspect high-pressure fuel lines for leaks
- Check fuel pressure with a scan tool
- Perform an injector leak-down test
- Repair or replace leaking component
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0006
Fuel Shutoff Valve A Control Circuit Low
P0007
Fuel Shutoff Valve A Control Circuit High
P0008
Engine Position System Performance - Bank 1
P0009
Engine Position System Performance - Bank 2
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1