Powertrain, generic · Auxiliary emission controls

P04E5 EGR Temperature Sensor D Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo

Exhaust gas recirculation (EGR) routes part of the exhaust back into the intake to lower combustion temperature and NOx. The code standard allows up to four EGR temperature sensors, A to D – for example before and after the cooler, or in the high- and low-pressure circuits; which is which depends on the maker. Sensor D is the fourth of them, usually an NTC whose low voltage means hot. P04E5 is its general circuit fault, conceivable on systems with high- and low-pressure EGR and two sensors per circuit. No manufacturer document available to us uses sensor D – GM, Ford and FCA use at most A to C – so the description follows CARB's requirement to check input circuits for continuity and range. EGR then uses a substitute value or is switched off.

Likely causes

Wire or connector fault
Sensor faulty
Engine module

Symptoms

  • Check engine light on
  • Usually no change in driving (EGR on a substitute value or off)
  • Possibly EGR flow or cooler codes (P0401, P2457)

Repair estimate

DifficultyMediumDIY possible
Parts and labour€60–300
Time0.5–1.5 h

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

Parts involved

egr temperature sensor dsensor wiringengine control module

Related codes

P04E6P04E7P04E8P04E9P04CE

References: law.cornell.edu, fordservicecontent.com.