P0175 on Kia
System Too Rich (Bank 2)
P0175 on Kia vehicles indicates system too rich (bank 2). Au7o has documented this code across 1 Kia model — most commonly on Telluride. P0175 is a generic OBD-II code meaning the engine computer detected that the air-fuel mixture on bank 2 is too rich, with too much fuel relative to air. The computer has had to remove fuel (negative fuel trim) to try to correct it but has reached its adjustment limit. Bank 2 is the cylinder bank that does not contain cylinder #1. A persistently rich mixture wastes fuel, causes rough running, and can overheat and damage the catalytic converter over time. Typical repair costs on Kia range from $50 to $500, depending on the specific model and root cause.
Common Causes of P0175
- •Dirty or faulty mass air flow (MAF) sensor
- •Leaking or stuck-open fuel injector
- •Excessive fuel pressure / faulty fuel pressure regulator
- •Faulty or contaminated oxygen sensor
- •Engine vacuum leak or false air reading
- •Dirty/clogged air filter or restricted intake
- •Leaking fuel injector O-rings or fuel saturation
- •Faulty coolant temperature sensor skewing fuel trims
P0175 on Kia by Model
Kia Telluride(1 issue)
- Oil Dilution from Short Trip Driving (3.8L V6)2020-2025
The 3.8L Lambda II V6 in the Telluride experiences fuel dilution of the engine oil when driven primarily on short trips (under 10 miles). Fuel washes past the piston rings during cold starts and does not fully evaporate because the oil never reaches full operating temperature. The diluted oil has reduced viscosity and lubrication properties, accelerating engine wear. The issue is more pronounced in cold climates. Oil analysis shows fuel contamination levels of 3-5% in severe cases.
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View P0175 across all makes →Frequently Asked Questions
What does P0175 mean on Kia?▼
P0175 stands for "System Too Rich (Bank 2)." P0175 is a generic OBD-II code meaning the engine computer detected that the air-fuel mixture on bank 2 is too rich, with too much fuel relative to air. The computer has had to remove fuel (negative fuel trim) to try to correct it but has reached its adjustment limit. Bank 2 is the cylinder bank that does not contain cylinder #1. A persistently rich mixture wastes fuel, causes rough running, and can overheat and damage the catalytic converter over time. On Kia specifically, this code is documented across 1 model.
What causes P0175 on Kia vehicles?▼
Common causes on Kia: Dirty or faulty mass air flow (MAF) sensor, Leaking or stuck-open fuel injector, Excessive fuel pressure / faulty fuel pressure regulator, Faulty or contaminated oxygen sensor, Engine vacuum leak or false air reading. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0175 on a Kia?▼
Repair costs on Kia range from $50 to $500, depending on the specific model and root cause.
Which Kia models have P0175 documented?▼
Au7o has documented P0175 on 1 Kia model: Telluride.