Powertrain, generic (extended)

P262F Sensor Reference Voltage G Circuit Range/Performance

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P262F is the plausibility check of reference output G. The voltage is neither shorted nor missing, yet it wanders outside a tighter tolerance band or jumps around, which falsifies every ratiometric sensor on that circuit. Ford's 2012 summary shows the idea for its references A to C on Bosch Tricore modules: below 4.7 V or above 5.2 V for 0.5 s counts as a range fault. GM goes further on its numbered references and also compares the filtered with the unfiltered value, failing when they drift apart, so short dropouts are caught as well. No manufacturer documents P262F publicly. Typical sources are a poor ground at the module, a loose pin that opens briefly under vibration, or a sensor drawing too much current. P262C to P262E are the circuit faults on G.

Likely causes

Loose pin or splice on circuit G opening briefly under vibration
Poor ground connection of the engine module
Sensor on the group drawing excessive current
Drifting internal regulator of the engine module

Symptoms

  • Check engine light
  • Sporadic implausible values from several sensors
  • Occasional hesitation or limp mode

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€50–800
Time1–4 h

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

Parts involved

sensor reference voltage circuitsensor wiringengine control module

Related codes

P262CP262DP262EP06D9P06A6

References: law.cornell.edu, newtonnet.co.uk, gsi.ext.gm.com.