What causes B0168 on a Chevy?

Failed right side passenger compartment temperature sensor with an out of range element Open or short in the sensor signal circuit Corroded or loose sensor connector Sensor contaminated or blocked by debris Faulty input inside the HVAC control module

How do I fix B0168 on a Chevy?

Confirm the code with a scan tool and compare the reading to a known temperature Inspect and reseat the sensor connector and check for corrosion Test the sensor and its signal circuit against the service chart Repair any chafed or open wiring before condemning the sensor Replace the sensor only if its reading does not match actual temperature

Code

B0168

Right side passenger compartment temperature sensor circuit malfunction

Q: What does B0168 mean on a Chevy?

B0168. Right side passenger compartment temperature sensor circuit malfunction. The HVAC module loses that cabin reading and sets a body warning. Applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

Category: Body
Severity: Body Warning Light
Applies to: Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code
Related: No single generic twin. See OBD Codes List

What it means

B0168. Right side passenger compartment temperature sensor circuit malfunction. The HVAC module loses that cabin reading and sets a body warning. This Chevy-enhanced code applies to Chevrolet, GMC, Buick, Cadillac, Pontiac, Oldsmobile and Saturn models that use this code.

Findings, check these first

Failed right side passenger compartment temperature sensor with an out of range element
Open or short in the sensor signal circuit
Corroded or loose sensor connector
Sensor contaminated or blocked by debris
Faulty input inside the HVAC control module

Standard procedure

Confirm the code with a scan tool and compare the reading to a known temperature
Inspect and reseat the sensor connector and check for corrosion
Test the sensor and its signal circuit against the service chart
Repair any chafed or open wiring before condemning the sensor
Replace the sensor only if its reading does not match actual temperature

Look up another code

Press / to jump to the box. Chevy-enhanced powertrain, body, chassis and network codes.

Sources and review

Review: checked against the recorded source material.

Code B0168 definition | OBDII.pro
live manufacturer definition (obdii.pro)
Supports: GM manufacturer meaning for B0168
Fetched directly. The GM entry is the brand-family meaning used here. This site is independent of engine-codes and autocodes.
B0168 CHEVROLET Passenger Compartment Temperature Sensor 2 Circuit | Engine-Codes.com
archived reference page (engine-codes.com via Wayback Machine)
Supports: Chevrolet meaning and possible causes
Fetched directly. Model and year fitment remain curator claims.
B0168 CHEVROLET Passenger Compartment Temperature Sensor 2 Circuit | AutoCodes.com
archived reference page (autocodes.com via Wayback Machine)
Supports: corroboration of Chevrolet meaning and causes
Same Chevrolet text as the engine-codes page (both sites share one publisher).

Last updated 2026-09-26.

Report a correction for B0168. Include your vehicle, the issue and a source if you have one.