Code result
P07F4
Transmission Range Control Module Communication Circuit High
High severity
What it means
Range control module communication line reads stuck high — bus shorted to battery voltage or open at the bus terminator.
Is it safe to drive?
No — stop driving
This code points to a problem that can cause damage or affect safety. Avoid driving and have the vehicle diagnosed promptly.
Most likely causes
Bus shorted to battery voltage
highOne of the most commonly reported causes for this code — check this first.
Gateway module routing CAN messages incorrectly
lowLess common, but worth ruling out after the more likely causes.
CAN terminating resistor (120 Ω) drifted out of spec
lowLess common, but worth ruling out after the more likely causes.
Related help
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