P2623high severityPowertrain
Injector Control Pressure Regulator Circuit
on 2003 Toyota Tacoma 2.7L I4 · RWD
What this code means
A fault was found in the injector control pressure regulator circuit. This regulator controls the high pressure used to fire the injectors on some diesels.
Symptoms
- Hard starting
- Low power
- Rough running
Common causes
- Faulty pressure regulator
- Wiring or connector fault
- Low oil or fuel pressure
- Failed control module
Diagnostic steps
- Verify code with scan tool
- Check regulator circuit wiring
- Test regulator resistance
- Inspect control pressure with scan data
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Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0004
Fuel Volume Regulator Control Circuit High
P0005
Fuel Shutoff Valve A Control Circuit/Open
P0005
Fuel Shutoff Valve A Control Circuit/Open