Powertrain, generic · Fuel and air metering

P01C7 Fuel Pressure Sensor A Circuit Intermittent/Erratic

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

Fuel pressure sensor A is a fuel pressure sensor without 'rail' in its name and without a bank – unlike the rail pressure sensors P0190–P0194 and P01BE–P01C2; which sensor it is depends on the manufacturer. The only documented case is FCA, where sensor A is the low-pressure sensor in the supply line, read together with the fuel pump control module. GM calls its low-pressure sensor 'sensor B' (P018A–P018E). P01C7 covers jumps or brief dropouts in the signal – typically loose contacts, water or corrosion in the connector, the problems FCA lists for its sensor A circuit. No manufacturer document using exactly this code was found; the description rests on CARB's circuit monitoring requirement, the FCA sibling code P01C6 and GM's equivalent low-pressure sensor checks.

Likely causes

Loose contact, water or corrosion in the connector
Harness chafed
Sensor faulty internally

Symptoms

  • Check engine light on (often intermittent)
  • Brief stumbling
  • Occasional starting problems

Repair estimate

DifficultyMediumDIY possible
Parts and labour€50–350
Time0.5–2.5 h

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

Parts involved

fuel pressure sensor afuel pump control modulesensor wiring

Related codes

P01C3P01C4P01C5P01C6P018E

References: law.cornell.edu, static.nhtsa.gov.