P0700 on a Nissan Altima
P0700 means transmission Control System Malfunction. On the Altima, a few causes come up far more than others.
What P0700 usually means on a Altima
P0700 on the Altima is a general flag that the transmission control module has logged a fault and turned on the check-engine light - it is a pointer, not a specific failure, so it accompanies a more detailed CVT code stored in the TCM. On the Altima's Xtronic CVT this often relates to heat, worn belt/pulley behavior, or a valve-body or sensor fault. Symptoms can include shudder, whining, RPM flare, or a limp-home mode. You need a scan tool that reads TCM codes, not just the generic P0700, to diagnose it.
Most common causes on the Altima
- Stored CVT fault in the TCM
P0700 only signals that the transmission module set a code; read TCM-specific codes to see the real fault.
- Overheating or degraded CVT fluid
Heat breaks down Nissan CVT fluid, causing judder and triggering internal faults.
- Worn belt/pulley or valve body
Xtronic wear produces slip, flare, and shudder that log faults.
- Speed sensor or solenoid fault
A failing input or output speed sensor or solenoid trips a transmission code.
What P0700 costs to fix on a Altima
P0700 itself costs nothing to fix - it directs you to the underlying CVT code, and cost depends entirely on that. A CVT fluid service is the affordable starting point; a valve body is a mid-range repair; a full CVT replacement is a major expense that on some Altimas rivals the car's value. Get the TCM codes read before authorizing any transmission work.
Year, engine and mileage change the answer. Start a case and Redline weighs these causes against what your car shows, then names the check that would settle it.
Altima owners also ask
Does P0700 mean my Altima's CVT is failing?
Not by itself - P0700 just says the transmission module logged a fault. A technician must read the CVT-specific code behind it to know whether it is a minor sensor issue or serious internal wear.
Can I keep driving my Altima with P0700?
Redline can't make that call from the code alone. P0700 sits on top of a CVT fault that can involve overheating or wear, so have the transmission-specific code read promptly to avoid further damage. If it slips, shudders, or loses drive, stop driving and have it towed.
Other codes on the Nissan Altima
Related symptoms
Nissan Altima problems & recalls by year
Based on widely reported patterns for this model; individual causes vary by year, engine and history. Generic P0700 behavior is covered on the main P0700 page. Confirm with a scan tool before buying parts.
P0700 on your Altima?
Every problem becomes a Case. Tell Redline what your Altima is doing: it shows what the evidence supports, what’s still missing, and what to check next, before you approve a repair.
“Inner pad ~1 mm. Outer pad 3 mm.”
Next: check the slide pins move freely before buying parts.