Hybspec

P1880

Wysoki

Reverse Input Circuit error. The Transmission Control Module (TCM) has detected an incorrect signal from the reverse input circuit.

OBD-II (EN): Reverse Input Circuit Error

Code P1880 indicates a problem with the reverse input circuit in an automatic transmission. The most common causes are a faulty switch, a wiring harness issue, or a problem with the solenoid inside the transmission. Due to the risk of losing reverse gear, prompt diagnosis by a specialist is recommended.

Symptoms

Inability to engage reverse gear or improper operation; Check Engine or AT (Automatic Transmission) warning light illuminated; possible shuddering/jerking when engaging reverse; transmission may enter limp mode; transmission error message on the dashboard.

Possible causes

• Faulty or worn reverse input switch • Open circuit, short circuit, or corrosion in the reverse input circuit wiring harness • Faulty or contaminated reverse gear solenoid inside the transmission • Malfunctioning Transmission Control Module (TCM/PCM) • Low level or contaminated Automatic Transmission Fluid (ATF)

Affected systems

automatyczna skrzynia biegówmoduł sterowania skrzynią (TCM)elektrozawory skrzyni biegówwiązka kablowa układu napędowego

Related codes

P0845Wysoki

Nieprawidłowe działanie obwodu czujnika/przełącznika ciśnienia płynu skrzyni biegów "B". Moduł sterujący (PCM/TCM) wykrył usterkę elektryczną w obwodzie TFPS.

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Does code P1880 require professional diagnostics?

The code alone is not enough. To find the cause, you need to read live data, check freeze frame conditions, and compare with vehicle behavior. Book a diagnostic session.