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U0614 Lost Communication With Intake Air Temperature Sensor 2 Bank 2

Check engine lightOn

EmissionsRelevant

Drive cycleNot required

Limp modeNo

This is the bank 2 counterpart of U0613: the downstream intake temperature sensor of the second bank, usually after that bank's charge air cooler or in its manifold half, delivers its value digitally and the controller has stopped receiving it. Typical carriers are TMAP-style sensors whose SENT frames hold pressure and temperature, protected by a CRC and status bits, as described for Infineon's KP276. No manufacturer documents U0614 publicly; even GM's twin-throttle tables, which use U0611 to U0613, leave it out. The code therefore rests on CARB 1968.2, which demands a separate fault code when a digital input stops communicating. P00A5 to P00A9 describe the analog circuit of the same sensor. The engine controller falls back to a modelled charge temperature for that bank.

Likely causes

Wiring fault to the bank 2 combined temperature/pressure sensor

Bank 2 combined sensor failed

Corroded or oily connector at the bank 2 sensor

Symptoms

Check engine light
Little effect on driving, occasionally less boost

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 2sensor wiring

References: law.cornell.edu, infineon.com, en.wikipedia.org.