Powertrain, generic (extended)

P2192 System Too Rich at Higher Load (Bank 1)

Check engine lightOn

EmissionsRelevant

Drive cycleRequired

Limp modeNo

P2192 is the rich-side limit of the bank 1 trim in the upper load zone: the controller has pulled as much fuel as it may and the front sensor still reports excess fuel. Typical sources grow with demand, such as an air mass sensor reading high, fuel pressure above specification, or injectors that over-deliver or drip at high rail pressure; on direct-injection engines a leaking high-pressure injector is a prime suspect. Kia documents the code by name: bulletin ENG 146 (2015) lists P2192 with P2188 and other codes on 2012 to 2014 Rio and Soul with the 1.6 GDI engine and cures it with an ECM software upgrade rather than parts. GM handles the same load range as P2178 with a lower factor limit of 0.78. Expect higher consumption and possibly a fuel smell; P2188 is the idle counterpart, P2178 the off-idle one.

Likely causes

ECM calibration issue covered by a software update (e.g. Kia 1.6 GDI)

Air mass sensor reading too high

Injector leaking or over-delivering at high rail pressure

Fuel pressure above specification

Symptoms

Check engine light on
Increased fuel consumption
Fuel smell or dark exhaust under load

Repair estimate

DifficultyMediumDIY possible

Parts and labour€0–900

Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

fuel pressure regulatormass air flow sensorfuel injector

Related codes

P2191 P2194 P2178 P2188 P0172

References: static.nhtsa.gov, law.cornell.edu, gsi.ext.gm.com.