Code 1611-2
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GL450cdi x164
Code 1611-2
2010 GL450 Cdi, (164.828). Engine OM629
Have a returning issue, Code 1611-2, "Check supply voltage (1) of sensors. Readout too small"
First time this code showed up, last summer, it was due to a bad Oil Level Sensor (B40). Now it shows up again, but only after sitting for a couple of weeks. After running the engine for some minutes, and hooking up a Star SD4 to clear the code, everything is OK until next time it sits for a couple of weeks.
Tested B40 - Oil sensor, B28/2 - DPF Pressure differential sensor, and B28/5 - Pressure sensor downstream of air cleaner, All 3 sensors and wiring OK.
Last time, I charged the battery before starting the engine, this time no code after engine start. Could this 1611-2 be related to a weak battery, Main or Aux battery? Can't remember to see this 1611-2 code earlier, even with a drained main battery.
Aux battery reads 12.5v after sitting disconnected for 24 hours, Main battery shows 12.6v after sitting disconnected for 24 hours.
Have a returning issue, Code 1611-2, "Check supply voltage (1) of sensors. Readout too small"
First time this code showed up, last summer, it was due to a bad Oil Level Sensor (B40). Now it shows up again, but only after sitting for a couple of weeks. After running the engine for some minutes, and hooking up a Star SD4 to clear the code, everything is OK until next time it sits for a couple of weeks.
Tested B40 - Oil sensor, B28/2 - DPF Pressure differential sensor, and B28/5 - Pressure sensor downstream of air cleaner, All 3 sensors and wiring OK.
Last time, I charged the battery before starting the engine, this time no code after engine start. Could this 1611-2 be related to a weak battery, Main or Aux battery? Can't remember to see this 1611-2 code earlier, even with a drained main battery.
Aux battery reads 12.5v after sitting disconnected for 24 hours, Main battery shows 12.6v after sitting disconnected for 24 hours.
Last edited by Jamm; Dec 17, 2020 at 06:27 PM. Reason: Typing error
Thread Starter
Newbie
Joined: Sep 2017
Posts: 14
Likes: 2
GL450cdi x164
Returning issue: Code 1611-2, "Check supply voltage (1) of sensors. Readout too small".
- Replaced main and aux batteries. No CEL or codes for almost a year, now this CEL with code 1611-2 shows up again. Bad ECM or just bad luck with battery, AGM 850 CCA?
Accoding to DAS sensor voltage from ECM to B40 (oil sensor) should read between 4.9 - 5.1v, actual reading was 4.92v
Accoding to DAS sensor voltage from ECM to B28/5 (Pressure sensor downstream of air cleaner) should read between 4.6 - 5.1v, actual reading was 4.9v
Accoding to DAS sensor voltage from ECM to B28/12 & B28/13 (DPF pressure differential pressure) should read between 4.9 - 5.2v, actual reading was 4.95v
B40 positive pin 40 from ECM connector. ground from ECM connector pin 36
B28/5 positive pin 39 from ECM connector. ground from ECM connector pin 8
B28/12 positive pin 45 from ECM connector. ground from ECM connector pin 30
B28/13 positive pin 45 from ECM connector. ground from ECM connector pin 30
- Replaced main and aux batteries. No CEL or codes for almost a year, now this CEL with code 1611-2 shows up again. Bad ECM or just bad luck with battery, AGM 850 CCA?
Accoding to DAS sensor voltage from ECM to B40 (oil sensor) should read between 4.9 - 5.1v, actual reading was 4.92v
Accoding to DAS sensor voltage from ECM to B28/5 (Pressure sensor downstream of air cleaner) should read between 4.6 - 5.1v, actual reading was 4.9v
Accoding to DAS sensor voltage from ECM to B28/12 & B28/13 (DPF pressure differential pressure) should read between 4.9 - 5.2v, actual reading was 4.95v
B40 positive pin 40 from ECM connector. ground from ECM connector pin 36
B28/5 positive pin 39 from ECM connector. ground from ECM connector pin 8
B28/12 positive pin 45 from ECM connector. ground from ECM connector pin 30
B28/13 positive pin 45 from ECM connector. ground from ECM connector pin 30
Newbie
Joined: Jan 2023
Posts: 1
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GL 420cdi
Hello
I´m facing the same issue. Only if the car sits for week or more. Together with 1611, I have also fault codes 2062,2040,2041.
Dashboard complains about faulty oil sensor. Oil sensor have been already changed for new original one.
Were you able to find out what caused the problem?
Thanks
I´m facing the same issue. Only if the car sits for week or more. Together with 1611, I have also fault codes 2062,2040,2041.
Dashboard complains about faulty oil sensor. Oil sensor have been already changed for new original one.
Were you able to find out what caused the problem?
Thanks
