OBD-II code · Emissions / Engine
The engine takes too long to warm up — a thermostat stuck open, nine times out of ten. Cheap part, but it costs you fuel, heat, and emissions until it is fixed.
Some shops pair this with while-we-are-in-there flushes and water-pump quotes ($800+). The code itself points at a $25–$80 part.
Typical guess-and-swap cost: $800+ when the honest fix is a $25–$80 thermostat
Watch coolant temperature rise on a scan tool during warm-up and compare inlet vs outlet to confirm flow while cold. If the thermostat is confirmed, replace it and verify the code clears with normal heat range.
Mobile service in Canyon Lake, San Antonio & Austin. Written report with root cause — see a sample.