GM Engine Error Code P1114: How to Fix It

Q: Can I drive with GM error code P1114?

You can drive short distances, but the engine may run poorly with reduced fuel economy and increased emissions. The engine computer will use default temperature values, which may not be optimal for your driving conditions.

Q: How much does it cost to fix P1114?

If it's just the ECT sensor, expect to pay $50-150 for the part plus 1-2 hours of labor. If wiring repairs are needed, costs can increase to $200-400 depending on the extent of the damage.

Q: What causes GM P1114 error code?

Common causes include a faulty ECT sensor, damaged wiring or connectors, low coolant level, air bubbles in the cooling system, or rarely, a malfunctioning PCM (engine computer).

Q: Will P1114 cause my engine to overheat?

P1114 itself won't cause overheating, but if the underlying issue is low coolant or cooling system problems, overheating could occur. Monitor your temperature gauge closely and address cooling system issues immediately.

Abstract

GM error code P1114 indicates an intermittent low voltage signal from the Engine Coolant Temperature (ECT) sensor. This can cause poor engine performance, rough idling, and increased emissions as the engine computer can't properly monitor coolant temperature.