Damaged, chafed, or corroded wiring in the Intake Air Temperature Sensor 2 Bank 1 circuit; Loose or contaminated electrical connector at the sensor or at the module that reads it; Failed Intake Air Temperature Sensor 2 Bank 1 itself, causing the module to drop off the bus; Faulty control module that hosts the sensor circuit, such as a powertrain or body module; CAN bus communication fault, including open or shorted bus wires or a failed terminating resistor; Low battery voltage or poor grounds that disrupt module communication; Aftermarket accessories or improper repairs that introduce electrical noise on the network

DTC codes / U06xx · Network communication / U0613

U0613Lost Communication With Intake Air Temperature Sensor 2 Bank 1

U0613 is a network communication code indicating that a control module on the vehicle's Controller Area Network (CAN) bus has lost contact with the Intake Air Temperature Sensor 2 Bank 1 circuit. The computer detected that the module responsible for monitoring that sensor stopped reporting data or failed to respond to requests over the communication bus.

SystemNetwork

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaNetwork communication

Symptoms you may notice

Illumination of the Check Engine Light or Service Vehicle Soon message
Often no symptoms besides the warning light, with the engine running normally
Slightly rough idle or hesitation if the powertrain control module substitutes a default intake air temperature value
Reduced fuel economy in some cases because the computer relies on calculated rather than measured air density
Intermittent warning light that comes and goes with temperature or vibration
Other unrelated warning lights or communication codes if the fault lies on a shared bus segment

Common causes, most likely first

Damaged, chafed, or corroded wiring in the Intake Air Temperature Sensor 2 Bank 1 circuit
Loose or contaminated electrical connector at the sensor or at the module that reads it
Failed Intake Air Temperature Sensor 2 Bank 1 itself, causing the module to drop off the bus
Faulty control module that hosts the sensor circuit, such as a powertrain or body module
CAN bus communication fault, including open or shorted bus wires or a failed terminating resistor
Low battery voltage or poor grounds that disrupt module communication
Aftermarket accessories or improper repairs that introduce electrical noise on the network

How to diagnose and fix it

Perform a thorough visual inspection of the sensor, its connector, and the wiring harness for damage or corrosion
Use a scan tool to read all stored codes and verify that U0613 is current, then check for related communication codes on the same bus
Measure battery voltage and test the charging system to rule out low-voltage communication faults
Check the sensor circuit with a multimeter for opens, shorts, and resistance values against the manufacturer's specification
Perform a wiggle test on the harness and connectors while watching live data to expose intermittent faults
If the circuit tests good, substitute a known-good sensor or module to confirm the failed component before replacement
Clear codes and road test the vehicle to confirm the repair, then verify that no communication codes return

Why this code is often a wiring fault

Many technicians replace the intake air temperature sensor only to find the real problem is a chafed wire or corroded pin that interrupts communication intermittently.
U0613 can be set by a module that is failing to power up or ground properly, so always verify powers and grounds at the module before condemning the sensor.
A weak battery or failing alternator can cause multiple modules to drop off the bus and set communication codes like U0613 without any sensor being faulty.
Aftermarket electrical accessories or poor previous repairs can introduce noise on the CAN bus and trigger communication codes that mimic sensor failures.
The code does not always mean the sensor is dead; it means the module lost communication, which can happen when the sensor circuit is intact but the reporting module resets.

Can I keep driving with U0613?

The vehicle is generally safe to drive because the engine management system substitutes a default intake air temperature value, but avoid long trips or heavy load until the fault is repaired. If the warning light is accompanied by rough running or multiple communication codes, have the vehicle inspected promptly.

Tools that help

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Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.