What does code P1351 mean?

Q: What does code P1351 mean?

Injection Sensor Circuit. P1351 on Mercedes-Benz vehicles indicates that the engine control module has detected a fault in the injection sensor circuit, which typically monitors the fuel injector's electrical operation or needle lift. The computer compares expected injector response with actual feedback and sets this code when the signal is missing, out of range, or implausible.

DTC codes / Mercedes-Benz codes / P1351

P1351 · Mercedes-BenzInjection Sensor Circuit

P1351 on Mercedes-Benz vehicles indicates that the engine control module has detected a fault in the injection sensor circuit, which typically monitors the fuel injector's electrical operation or needle lift. The computer compares expected injector response with actual feedback and sets this code when the signal is missing, out of range, or implausible.

SystemPowertrain

Code typeMercedes-Benz specific

SeverityMedium

Fix difficultyProfessional

AreaIgnition system and misfire

Guidance is general and written for Mercedes-Benz vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.