eliasknight60

Maxima transmission issues

Hi, I've got a 2007 Nissan Maxima with a gasoline engine that's acting up. I'm getting a transmission indicator light and check engine light. The automatic transmission goes into emergency mode, doesn't shift right, slips, and makes grinding noises. Error's stored in the memory. Could a defective radiator oil pressure be the culprit? Any thoughts?

A 2007 Nissan Maxima was experiencing transmission issues, including emergency mode activation, improper shifting, slipping, and grinding noises, accompanied by a transmission indicator and check engine light. The problem was suspected to be related to a defective radiator oil pressure, but other potential causes included issues with the transmission fluid level, cooling fan, or oil cooler. After further investigation, it was discovered that a defective cable connecting to the pressure sensor was the cause, and replacing it resolved the issue.

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4 comment(s)

A defective radiator oil pressure impacting transmission performance? It's plausible, but several factors could be at play. Has the transmission fluid level been checked recently? What diagnostic codes are you pulling from the error memory? Is the cooling fan working correctly? And have you inspected the oil cooler itself for any signs of physical damage or leaks?

Fluid level is fine. I haven't checked the diagnostic codes yet, I will do that. How could the cooling fan or oil cooler affect it? And where exactly should I be looking for these potential leaks?

If the cooling fan is malfunctioning, it could lead to overheating, affecting transmission performance. The oil cooler helps regulate the transmission fluid temperature. Leaks in the cooler or related lines can drop pressure and cause shifting problems. You'd be looking for any signs of fluid around the cooler connections, hoses, and the radiator itself. Given the symptoms and the potential connection to radiator oil pressure, it would be wise to have a workshop perform a thorough leak detection and pressure test. Have the cable or plug connection checked - might be defective.

Thanks, I appreciate the detailed insight. Took it to the workshop and you were right. Turns out a cable was defective, connecting to the pressure sensor. Replacing it and the associated plug connection cost me 95€ and fixed the issue. Cheers!

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NISSAN

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MAXIMA