P1101 — manufacturer-specific powertrain code

P1101 is a manufacturer-specific powertrain code: it is defined by the carmaker, not by the OBD-II standard, so the same code can mean different things on different brands. Below are the vehicles and failure patterns where owners report it, drawn from NHTSA complaints — the most reliable guide to what it means in practice.

Ask A Mechanic

In our record, P1101 is reported most often on Chevrolet, Buick and GMC vehicles , against engine and powertrain failure patterns , across 2013–2020 model years. Chevrolet alone accounts for 85% of them.

In ProblemsByVin's analysis of the NHTSA owner-complaint record, owners cite P1101 across 13 vehicle failure patterns. Diagnostic codes in complaints are reported by owners and are unverified — they point to where this code shows up, not a confirmed diagnosis. Open a page below for the full pattern (symptoms, mileage, repair costs owners cite).

Vehicles where owners report P1101 13 patterns

2020 Chevrolet Malibu

engine — Loss of Engine Power / Reduced Power Mode

2019 Buick Encore

engine — Knock sensor and intake manifold PCV system failure

2019 Chevrolet Malibu

powertrain — Transmission loss of power and delayed acceleration

2019 Chevrolet Malibu

engine — Camshaft timing and VCT issues

2018 Chevrolet Malibu

engine — Engine Power Reduced - Limp Mode Activation

2018 Chevrolet Malibu

powertrain — Engine Power Reduced / Loss of Power on Acceleration

2018 Chevrolet Malibu

brakes — Vacuum pump failure causing brake booster loss

2018 Chevrolet Malibu

steering — Steering Assist Loss / Reduced Power Steering During Auto Stop-Start Restart

2018 GMC Terrain

powertrain — Mass Air Flow Sensor & P1101 Code

2017 Chevrolet Malibu

cruise control — Accelerator Pedal Position Sensor Failure – Reduced Engine Power Mode

2017 Chevrolet Cruze

engine — Cracked or fractured pistons in cylinder 1

2016 Chevrolet Malibu

cruise control — Engine Power Reduced / Limp Mode Triggered by Accelerator Pedal / Throttle Sensor Fault

2013 Chevrolet Sonic

powertrain — Intake Manifold Gasket Failure Leading to Fuel and Drivability Issues

Codes are pulled from what owners wrote in their NHTSA filings — they're allegations, not a shop diagnosis. Always confirm with a live scan. Browse all diagnostic codes →