High severity
P0003Low voltage in the fuel pressure regulator circuit
Part
SCV solenoid
Part price
$113
At a workshop
$163
You save
$50
How to read code P0003
P
System
Powertrain (engine and transmission)
0
Code type
Generic code (SAE / OBD-II)
0
Subsystem
General system / auxiliary measurement
03
Fault number
Specific fault within the subsystem
Symptoms
- Engine won't start at all
- Check engine light comes on immediately after starting
- No response to the gas pedal
Possible causes
- Open circuit or short to ground on the connector
- Faulty fuel pressure regulator
- Faulty engine computer (ECM)
Diagnostic steps
- 1Use a multimeter to test the wires from the regulator to the ECM
- 2Check the fuses for the fuel system power circuit
- 3Test the resistance of the SCV solenoid itself
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Frequently asked questions about P0003
What does code P0003 mean?
P0003: Low voltage in the fuel pressure regulator circuit.
What are the symptoms of code P0003?
Engine won't start at all; Check engine light comes on immediately after starting; No response to the gas pedal.
What causes code P0003?
Open circuit or short to ground on the connector; Faulty fuel pressure regulator; Faulty engine computer (ECM).
Can I drive with code P0003?
DO NOT DRIVE – Risk of serious damage to components. Towing or repair on the spot is recommended.
How much does it cost to fix code P0003?
The part (SCV solenoid) costs about $113, and a mechanic’s labour about $50.
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