Powertrain, generic · Fuel and air metering, auxiliary emission controls

P006C MAP - Turbocharger/Supercharger Inlet Pressure Correlation

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

On turbocharged or supercharged engines the control module compares manifold pressure with the pressure measured upstream of the throttle, for example at idle or with the throttle wide open, where the two must lie close together. P006C is set when the difference exceeds a threshold. Manufacturers interpret "inlet pressure" differently: some mean boost pressure upstream of the throttle, others the pressure at the compressor inlet. Typical causes are a leak in the charge-air path or a faulty pressure sensor. Each sensor can be electrically fine on its own; regulations require such plausibility checks for input sensors with a code of their own.

Likely causes

Leak or disconnected hose in the charge-air path
Boost or inlet pressure sensor faulty
Manifold pressure sensor faulty
Throttle body fault

Symptoms

  • Check engine light on
  • Reduced power possible
  • Hissing from a charge-air leak

Repair estimate

DifficultyMediumDIY possible
Parts and labour€40–250
Time0.5–1.5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

manifold absolute pressure sensorboost pressure sensorcharge air ductsthrottle body

Related codes

P006DP0106P0236P0068

References: law.cornell.edu, static.nhtsa.gov, en.wikipedia.org.