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U0613 Lost Communication With Intake Air Temperature Sensor 2 Bank 1

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modeNo

Intake air temperature sensor 2 sits further downstream than sensor 1, for example after the charge air cooler or in the manifold, where it is frequently combined with a pressure sensor (a TMAP unit). Digital versions send the temperature together with pressure; Melexis' MLX90818 can carry a medium temperature in its SENT frame and replaces the value with a reserved error code when measurement fails. U0613 means this digitally delivered temperature for bank 1 is no longer received. The only public manufacturer use is GM (23OBDG07/24OBDG07), whose dual-throttle calibration stores U0613 jointly with U0611 when the bank 1 temperature message is lost or stuck high or low, MIL after two trips. P0095 to P0099 are the analog codes. Charge temperature then runs on a substitute value.

Likely causes

Damaged wiring to the combined temperature/pressure sensor

Temperature element or electronics of the combined sensor failed

Oil from the charge air path in the connector

Symptoms

Check engine light, on GM after two trips
Possible spark retard or boost reduction as a precaution

Repair estimate

DifficultyMediumDIY possible

Parts and labour€30–300

Time0.3–1.5 h

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

Parts involved

iat sensor 2 bank 1sensor wiring

References: gsi.ext.gm.com, media.melexis.com, law.cornell.edu.