P1955 Code: Meaning & Diagnostic Guide
Some generic diagnostic references label P1955 as “Glow Plug Control Module 2 to PCM Communication Circuit Range/Performance.” The cited reference cautions that Mercedes-Benz does not list P1955 as a Mercedes-specific code in its technical sources and that scanners may misreport Sprinter faults. This does not establish a Mercedes Sprinter-specific definition or a 2021+ BEV/PHEV application.
What does P1955 mean?
- GENERIC: Some generic diagnostic references label P1955 as “Glow Plug Control Module 2 to PCM Communication Circuit Range/Performance.” The cited reference cautions that Mercedes-Benz does not list P1955 as a Mercedes-specific code in its technical sources and that scanners may misreport Sprinter faults. This does not establish a Mercedes Sprinter-specific definition or a 2021+ BEV/PHEV application. Source
Is P1955 generic or manufacturer-specific?
P1955 has a generic source-backed definition in this database. The exact vehicle make, model, year and powertrain should be confirmed before using a definition for diagnosis.
P1955 symptoms
A diagnostic code identifies a detected condition; it does not by itself prove which component has failed. Symptoms can differ between vehicles. Record the exact warning message, any additional codes, and the operating condition when P1955 appeared.
Possible causes of P1955
Possible causes depend on the vehicle-specific definition and test results. Do not conclude that a named component has failed from P1955 alone; wiring, connections, control conditions and component tests should be evaluated using manufacturer procedures.
How to diagnose P1955
- Confirm the exact P1955 reading with a compatible scan tool and record any accompanying codes.
- Confirm the vehicle make, model, model year and powertrain before applying a reference definition.
- Prefer a verified manufacturer-specific report when one is available.
- Follow the manufacturer diagnostic procedure before replacing parts.
How to fix P1955
There is no safe universal parts-replacement fix for P1955 without vehicle-specific evidence. The correct resolution depends on the confirmed definition and diagnostic test results.
Can I drive with P1955?
A universal drive/no-drive answer cannot be inferred from P1955 alone. Follow the vehicle warning and manufacturer instructions.
P1955 frequently asked questions
What does P1955 mean?
Some generic diagnostic references label P1955 as “Glow Plug Control Module 2 to PCM Communication Circuit Range/Performance.” The cited reference cautions that Mercedes-Benz does not list P1955 as a Mercedes-specific code in its technical sources and that scanners may misreport Sprinter faults. This does not establish a Mercedes Sprinter-specific definition or a 2021+ BEV/PHEV application.
Can different manufacturers use P1955 differently?
Yes. Generic definitions and manufacturer-labelled definitions can coexist, so vehicle context matters.
Should I replace a part immediately?
No. A code is a diagnostic starting point, not proof that a named component has failed.
Search variants and canonical URL
Capitalization, underscores, hyphens, colons and spaces are normalized to this canonical code identity so alternate scan-tool formats do not create duplicate pages.