Intake air temperature sensor 1 is the first air temperature sensor in the intake path; depending on the vehicle it is built into the mass air flow sensor, mounted near the air filter or, on some naturally aspirated GM engines, fitted in the intake manifold. Most versions are NTC thermistors in a 5 V divider: the hotter the air, the lower the signal voltage. P0110 is the general circuit fault. With a conventional analogue sensor most manufacturers report low and high signals separately (P0112/P0113), so P0110 mainly appears in two cases: with digital (SENT) sensors that combine air mass and temperature, where it stands for lost communication or an implausible status (Ford diesel 2023, after about 5 s), and in some Bosch systems as a collective code whose fault type byte tells open circuit from short to ground. The control module then uses a substitute temperature; some systems also limit torque.
Low severity. Can I keep driving?Yes, you can generally keep driving normally, because the control module uses a backup value. You will only notice somewhat higher fuel consumption or poorer running in extreme cold or heat, and it should be repaired so it does not mask other faults.
Bank 1 is the side of the engine with cylinder 1. Inline engines only have this bank.
Symptoms
- Check engine light on
- Reduced power or torque limitation on some systems
- Otherwise usually inconspicuous; cold start may be slightly worse
Most likely causes
- Connector or wiring to the sensor open or corroded
- Sensor or mass air flow sensor with built-in temperature sensor faulty
- Sensor supply or ground disturbed
- Engine control module faulty
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: easy
- It can trigger limp mode.
- It affects emissions.
What each character of P0110 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- 1: Air and fuel
- 10: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0110?
Yes, you can generally keep driving normally, because the control module uses a backup value. You will only notice somewhat higher fuel consumption or poorer running in extreme cold or heat, and it should be repaired so it does not mask other faults.
What causes code P0110?
The most common causes are: connector or wiring to the sensor open or corroded; sensor or mass air flow sensor with built-in temperature sensor faulty; sensor supply or ground disturbed.
Related codes
- P0111Intake Air Temperature Sensor 1 Circuit Range/Performance Bank 1
- P0112Intake Air Temperature Sensor 1 Circuit Low Bank 1
- P0113Intake Air Temperature Sensor 1 Circuit High Bank 1
- P0114Intake Air Temperature Sensor 1 Circuit Intermittent/Erratic Bank 1
- P0100Mass or Volume Air Flow Sensor A Circuit
- P0095Intake Air Temperature Sensor 2 Circuit Bank 1
Sources
- law.cornell.edu: 13 CCR 1968.2
- fordservicecontent.com: obd summary diesel 2023
- saabwisonline.com: p0110 11
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.