SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET1995CAVALIER LS, 4D SEDAN, 2.2 4REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 4 (ENGINE CONTROLS - TESTS W/CODES - 4.6L)PCM CODE CHARTSCODE P052 & P109, PCM KEEP ALIVE MEMORY RESETNOTES ON INTERMITTENTS
1995 Chevrolet Cavalier LS, 4D Sedan, 2.2 4

Notes On Intermittents

1995 Chevrolet Cavalier LS, 4D Sedan, 2.2 4SECTION Notes On Intermittents
WARNING: This page is about a different car, the 1995 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.

If battery has been disconnected for any reason, Codes P052 and P109 will set. PCM keeps a running check on the memory, if memory changes it resets. Codes P052 and P109 may also set while keying OFF in diagnostics. If IPC is sending new information to PCM when ignition switch is turned off, making PCM think it has been switched off, causing a reset.

Fig 1: Code P052 & P109 Schematic, PCM Keep Alive Memory Reset
G94D32949Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.