High severity
P004CLow Voltage in Turbocharger Boost Control Circuit
Part
Boost Pressure Regulator Valve
Part price
$60
At a workshop
$98
You save
$38
How to read code P004C
P
System
Powertrain (engine and transmission)
0
Code type
Generic code (SAE / OBD-II)
0
Subsystem
General system / auxiliary measurement
4C
Fault number
Specific fault within the subsystem
Symptoms
- No response to throttle in low RPM range
- Poor vehicle performance
- Engine check light on
Possible causes
- Grounding issue in the electrical system
- Faulty boost pressure regulator valve
- Engine control module problem
Diagnostic steps
- 1Check wiring for shorts and grounding issues
- 2Measure voltage at the boost pressure regulator valve terminal
- 3Test the boost pressure regulator valve resistance
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Frequently asked questions about P004C
What does code P004C mean?
P004C: Low Voltage in Turbocharger Boost Control Circuit.
What are the symptoms of code P004C?
No response to throttle in low RPM range; Poor vehicle performance; Engine check light on.
What causes code P004C?
Grounding issue in the electrical system; Faulty boost pressure regulator valve; Engine control module problem.
Can I drive with code P004C?
LIMP MODE – You may drive carefully to the nearest workshop only.
How much does it cost to fix code P004C?
The part (Boost Pressure Regulator Valve) costs about $60, and a mechanic’s labour about $38.
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