Powertrain, generic (extended)

P2475 Exhaust Gas Temperature Sensor Circuit Low (Bank 2 Sensor 4)

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modeNo

P2475 is stored when the voltage from bank 2 probe 4 falls below the lowest value the probe can produce in normal use. With the resistive PTC probes common on diesels this points to a short between signal and ground, or to a sensor shorted internally. Published thresholds exist only for the bank 1 twin P2470: Ford's diesels treat less than 0.10 V as a fault after about 2 s with the key on, and GM's diesel tables test the probe input for a grounded condition as a Type B fault. No maker lists P2475 itself. The value of this probe is then replaced by a default, so the controller may restrict regeneration or reductant dosing until the repair.

Likely causes

Signal wire rubbed through against the exhaust or body
Probe shorted internally
Water in the connector bridging the pins

Symptoms

  • MIL on
  • Bank 2 probe 4 shows an implausibly cold or fixed value
  • Regeneration or DEF dosing restricted

Repair estimate

DifficultyMediumDIY possible
Parts and labour€20–350
Time0.3–1.5 h

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

Parts involved

egt sensor b2s4egt wiring

Related codes

P2476P2473P2474P2477P2470P2468

References: law.cornell.edu, fordservicecontent.com, gsi.ext.gm.com.