Code CP_a130 was reported by the “Charge port” controller in the car. The letter “a” in the middle places it among entries of the alert type.
The car's charge port — latch, connector lock, indicator light and proximity sensor. These codes typically appear when the connector will not lock or the car does not register that it is plugged in.
The most common type. The car logged the event and may have shown it on the screen. The range is wide — from something trivial that clears itself to something that needs attention.
This is how the fault is named inside the car's firmware. For codes without a description it is the most precise clue there is — the name itself says what the event is about.
The text below comes from Tesla's technical documentation. We leave it in the original English so that translation cannot shift its meaning.
The charge port was able to recover communications with the BLDC motor driver
Charge port establishes comms with the BLDC motor driver that had previously failed
The charge port (CP) latch is expected to be engaged but is not engaged. AC charge rate may be reduced, and DC charging may be unavailable.
The charge port (CP) latch position sensor indicates the latch is disengaged, either after the charge port has attempted to engage the latch or when the latch is already expected to be engaged.
The charge port (CP) latch engages.
The charge port (CP) latch may not engage as expected. AC charge rate may be reduced, and DC charging may be unavailable.
GB DC/AC PE busbar suspected missing
GB AC inlet proximity voltage reads greater than 4.75V for more than 100ms
GB AC and GB DC inlet proximity must both be sensed as disconnected for more than 200ms
Charging session cannot begin because the EVSE is still in authentication state
The EVSE spent an unexpected amount of time in the authentication state
Cleared when the EVSE finishes authenticating or the communication with the EVSE times out
Charging session may not start
The CP has detected that the Gen 2 Wall connector has measured a temperature at which AC charging should stop
info from manualCP_A102
The Gen 2 Wall Connector reports a temperature greater than 90C
The CP uses this to indicate a reset was caused by a power cycle
Supercharging is unavailable because the supercharger is updating
The Supercharger reports to the vehicle that it is updating
The cable is unplugged or the Supercharger reports that it is no longer updating
Latch drive enable hardline and corresponding CAN signal do not match
Latch drive enable hardline and corresponding CAN signal do not match for more than one second
Latch drive enable hardline and corresonding CAN signal match for more than one second
Inability to engage or disengage latch
Copy it exactly, letter and number included. Photographing the screen is safest — codes often differ by a single digit, and mixing them up leads somewhere else entirely.
Some codes clear after a screen restart or after the car sits locked for a few hours. If the code does not come back, it was usually a one-off glitch.
A one-off entry and a code that appears after every drive are two different things. It helps a service centre enormously if you know exactly when it shows up.
With airbags, brakes, steering and high voltage there is no point waiting it out. With the other groups you can watch and see whether the code returns at all.
Error codes are only part of the picture. For cars on TesList you also see battery health pulled straight from the vehicle, plus a price calculator that works out from current listings what a given car is actually worth today.