P0197 — Engine Oil Temperature Sensor A Circuit Low

What Does P0197 Mean?

P0197 is a diagnostic trouble code indicating: Engine Oil Temperature Sensor A Circuit Low. This code relates to the fuel and air metering system. It has been reported in NHTSA complaints across 1 different vehicle models.

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"The ETC warning light came on, then the car slowed down then stalled out and would not crank back up. Upon running a diagnostic, the following error codes displayed; P0420, P0340, P0197, P0117, P1D83, P2181(several codes showing up more than once showing permanent, pending). This also happened befor"
— Dodge Journey owner, 12/06/2022

Source: NHTSA Complaints Database

Most Reported Vehicles for P0197

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	DODGE JOURNEY

Frequently Asked Questions

Can I drive with this code?

You can usually drive short distances, but fuel economy will suffer and emissions will be higher. Get it diagnosed within a week.

Will this code cause my car to fail emissions?

Yes — any active check engine light will cause an automatic emissions test failure in most states.

How much does it typically cost to fix?

Depends on the root cause. Simple fixes like a gas cap ($5-15) to sensor replacement ($150-300) to more complex repairs ($500+).

What To Do Next

Possible Fixes

🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
🔧 Clean or replace the mass air flow (MAF) sensor; check for vacuum leaks
🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P0197: Engine Oil Temperature Sensor A Circuit Low