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1997 Mercedes-Benz E300 Fault Codes P1615, P1630, P1520, B1755 - Diagnosis & Solutions

Model: 1997 Mercedes-Benz E300 Fault Code: B1755 Posted: 2015-12-29 10:09

I recently purchased a 1997 Mercedes-Benz E300 and have been encountering several diagnostic trouble codes: P1615, P1630, P1520, B1755, as well as additional codes including 1404, 1040, 1041, 1045, 1754, and 1755. I'm looking for guidance on how to interpret these codes and what steps to take next. The vehicle exhibits hesitation at low RPMs—especially in parking lots when slow acceleration is needed—and sometimes the accelerator does not respond until a significant pedal input is applied. After that, the car accelerates suddenly. This behavior occurs primarily during the first third of the throttle行程. When I apply full throttle, the engine responds smoothly. I've already replaced the diesel filter upon receiving the vehicle, but the 'Check Engine' light remains on. A local mechanic has been unable to identify the root cause. I'm seeking advice on possible underlying issues and recommendations for reputable Mercedes-Benz diesel repair shops in the Dallas area.

Related fault codes
B1755P1520P1615P1630
Comments (7)
Anonymous 2016-01-02 18:16

Mercedes-Benz vehicles, like some BMW models, may trigger diagnostic codes when battery voltage is low. Try clearing all stored codes using a scan tool and then drive the vehicle for at least 5 miles under normal conditions. Afterward, reconnect the scanner to check for any new or recurring codes. This helps determine if the issue is related to electrical systems or mechanical faults.

Anonymous 2016-01-02 21:50

I followed your advice and drove the car for several miles on Monday. I’ll now bring a scan tool back to check the codes again and update you with the results. Thanks for the tip!

Anonymous 2016-01-04 13:19

Please share the updated diagnostic codes as soon as they are retrieved—this will help pinpoint the exact issue.

Anonymous 2016-01-04 21:48

I'm still not clear on what steps to take or how these codes relate to each other. Could you provide more detailed guidance?

Anonymous 2016-01-05 09:33

Clear all diagnostic codes and drive the vehicle for at least five miles under varied conditions. Return to your garage or mechanic and perform a full system scan. Share the resulting codes with us—some faults can trigger multiple related issues, so identifying which code appears first is critical for accurate diagnosis.

Anonymous 2016-01-05 11:19

I'll be out of town for a while. I’ll follow through with this process once I return and update you accordingly. Regards, Jeanalamerco

Anonymous 2016-04-20 08:53

Hello everyone, Since acquiring this vehicle, I’ve noticed hesitation at low RPMs—especially in parking lots where slow acceleration is needed. At times, the accelerator doesn’t respond until a significant pedal input is applied. After that, the car accelerates suddenly. This typically happens during the first third of the throttle行程. When I fully press the gas pedal, the engine responds smoothly and runs well. I recently completed a 35.5-mile journey from Houston to Dallas with excellent fuel efficiency. Any insights into what might be causing this? The diesel filter was replaced on day one. The 'Check Engine' light remains on, and despite a local mechanic’s inspection, no root cause has been found. Are there any recommended Mercedes-Benz diesel specialists in the Dallas area? Thanks for your help!