P00E0
Turbocharger/Supercharger Boost Control C PerformanceP00E0 is a generic OBD-II powertrain diagnostic trouble code: Turbocharger/Supercharger Boost Control C Performance. It is logged by the engine control unit when the powertrain monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.
What P00E0 means
DTC P00E0 is assigned to a performance fault in Turbocharger/Supercharger Boost Control circuit C. In SAE J2012 the C designation represents a third control actuator or stage, found on multi-turbo, compound, or variable-geometry systems with more than two individually controlled boost actuators. The fault is logged when the ECM's closed-loop boost control detects a sustained deviation between the commanded target and the measured output on the C circuit.
As with the A and B performance codes, the ECM evaluates the error over time rather than a single instantaneous sample. A performance designation means the actuator is present and electrically functional, but mechanical or fluid-path conditions are preventing the system from meeting its target. Wastegate wear, solenoid degradation, intercooler or inter-stage leaks, and sensor drift are the primary suspects.
Diagnosis should leverage live data to confirm which circuit is at fault and whether the deviation is consistently over or under target. A lean fault that is consistently underperforming on the C circuit while the A and B circuits are normal points to C-specific plumbing, actuator, or sensor issues. Always perform a leak test of the associated circuit before replacing actuators or sensors.
Common causes
Most-frequently reported root causes when P00E0 is logged.
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1
Sticking or worn wastegate or bypass valve on the C boost stage.
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2
C-circuit boost control solenoid with mechanical wear or contamination.
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3
Charge air leak in the C-circuit piping or associated intercooler.
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4
C-circuit boost pressure sensor drift or contamination.
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5
Worn or damaged C turbocharger compressor reducing achievable pressure.
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6
Blocked or kinked vacuum or pneumatic line to the C-circuit actuator.
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7
ECM calibration or software issue mismatching the C actuator's expected response.
Symptoms drivers notice
How to diagnose P00E0
A typical diagnostic flow when this code is present.
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1
Retrieve all DTCs to determine whether the fault is isolated to the C circuit or part of a multi-circuit failure.
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2
Use live data to observe the deviation between commanded and actual boost on the C circuit across load ranges.
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3
Pressure-test the C-circuit charge air plumbing for leaks.
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4
Inspect and test the C-circuit boost control solenoid electrically and verify it moves its actuator when commanded.
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5
Check the C-circuit wastegate or bypass valve actuator for free movement and intact diaphragm.
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6
Verify the C-circuit boost pressure sensor reads accurately by comparison with a calibrated reference.
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7
Inspect the C turbocharger for shaft play or compressor damage if plumbing and actuators are normal.
Related powertrain codes
Frequently asked questions
Is P00E0 common on standard single-turbo engines?
No. P00E0 requires a C-designated boost control circuit, which is only present on multi-stage or multi-turbo systems with three or more separately controlled boost actuators.
Can P00E0 set alongside P00C6 and P00D5?
Yes, if a shared component such as a boost sensor, solenoid power supply, or wiring harness fault affects all three circuits simultaneously.
Does P00E0 always result in limp mode?
It depends on the ECM calibration. Some strategies limit boost on the C circuit only; others reduce overall output as a precaution. Check live data to confirm the active strategy.
Can dirty engine oil cause P00E0?
Contaminated oil can accelerate turbocharger bearing wear and reduce compressor efficiency over time, potentially contributing to a performance fault, but it is rarely the immediate cause of P00E0.
Disabling P00E0 in software
RaceTune can permanently disable P00E0 — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.
Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.
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