Chevrolet Impala: Common Codes & Fixes

Real-world diagnostic data for the Chevrolet Impala. These are the codes techs see most often. Tap any code for the full vehicle-specific fix and the exact part.

12 codes have specific fixes for the Chevrolet Impala
C0050 On GM sedans, the rear wheel speed sensor is part of the rear hub assembly. 2014-2020 · easy DIY · 45 min - 1 hour C0110 Impala C0110 sometimes clears by cleaning the EBCM ground connection. 2006-2012 · hard DIY · 2-3 hours C0561 Impala C0561 almost never stands alone. 2006-2013 · easy DIY · Varies P0178 FFV composition sensor low voltage — inspect the signal wire between sensor and PCM for chafe near the transmission. 2009-2015 · Moderate DIY · 1-2 hr P0401 The EGR valve pintle gets stuck from carbon deposits. 2005-2015 · moderate DIY · 45 min P0441 The EVAP purge solenoid valve on GM 3.5/3.6L engines sticks open, causing a rich condition on startup and P0441. 2006-2015 · Easy DIY · 30 minutes P0462 The fuel level sensor signal wire shorts to ground in the body harness. 2006-2016 · Moderate DIY · 2-3 hours P0485 Failed cooling fan relay or fan control module. 2006-2013 · easy DIY · 20 min (relay), 1 hour (module) P0530 The A/C refrigerant pressure sensor on GM vehicles reads erratic values when the connector corrodes. 2006-2016 · Easy DIY · 30 minutes P2097 Stuck-closed EVAP purge solenoid dumping fuel vapor into the intake at idle can set P2097. 2008-2015 · easy DIY · 30 min P2271 Failed catalytic converter saturated with oil or coolant will always read rich downstream. 2004-2013 · moderate DIY · 2 hours U1609 GM cars set U1609 when a module loses serial data communication. 2006-2013 · Advanced DIY · 2-3 hours

Frequently Asked Questions

What are the most common check engine light codes on a Chevrolet Impala?

The most commonly reported OBD-II codes for the Chevrolet Impala include C0050, C0110, C0561, P0178, P0401. Each code indicates a specific issue -- tap any code above for the full diagnostic breakdown.

How much does it cost to fix a check engine light on a Chevrolet Impala?

Repair costs vary by code. Many Chevrolet Impala fixes like gas cap replacement, sensor cleaning, or spark plug changes are under $50 in parts and can be done at home. More complex repairs like catalytic converter or transmission work can run $500-$2,000+ at a shop.

Can I drive my Chevrolet Impala with the check engine light on?

It depends on the code. A steady check engine light usually means you can drive short distances safely. A flashing check engine light means stop driving immediately -- continued driving can cause serious engine damage. Scan the code first to know what you are dealing with.

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