P0089 Diagnostic Trouble Code Discussion for April 2025
Fuel Pressure Regulator Performance
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| Help Request | Posted | |
| 2021 Chevrolet Malibu LS 1.5L Lean VIN: 1G1ZD5ST4M P0089: Fuel rail low fuel pressure. ... P0089. They replaced the pcm. I reinstalled the original pcm and replaced the high pressure fuel pump. Fuel rail pressure at idle now is about 540 psi. P1101 also present. I cleaned the throttle body and relearned idle... |
April 28, 2025 |
