Is it safe to drive a 2020 Cadillac with code P0118?

You can typically drive with caution for short trips, but get it checked promptly.

How much does it cost to fix P0118 on a 2020 Cadillac?

For a 2020 Cadillac, repairs for P0118 typically cost between $50 and $200, depending on the specific cause and labor rates in your area.

What are common causes of P0118 on a 2020 Cadillac?

Failed engine coolant temperature sensor, Open circuit in ECT sensor wiring, Corroded or damaged sensor connector, Low coolant level exposing the sensor.

2020 Cadillac P0118: What It Means & Is It Safe to Drive?

P0118 on the 2020 Cadillac: Engine Coolant Temperature Circuit High Input. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.

PowertrainMedium urgency

What this code means

The engine coolant temperature (ECT) sensor is reporting a voltage signal that is too high, which the PCM interprets as an extremely cold or open-circuit condition. This is opposite to P0117 (low input) and often means the sensor or its wiring has failed open.

Common causes on the 2020 Cadillac

Failed engine coolant temperature sensor
Open circuit in ECT sensor wiring
Corroded or damaged sensor connector
Low coolant level exposing the sensor

Symptoms

Check Engine Light
Engine runs rich (PCM thinks it is always cold)
Poor fuel economy
Hard starting when warm

Typical fixes

Replace engine coolant temperature sensor
Inspect and repair wiring and connector
Check coolant level

Repair cost range

For a 2020 Cadillac, repairs for P0118 typically fall between $50 and $200, depending on the root cause and labor rates in your area.