P0958Generic code

P0958 Code: Auto Shift Manual Mode Circuit High

The P0958 code means the signal from the manual mode circuit is above its maximum value. It usually points to an open circuit or an interrupted ground. The effect is that manual mode does not work.

Severity
Low
Can I keep driving?
Yes, no immediate risk
Estimated cost
$30 to $300
Difficulty
Medium
System
Transmission
Applies to
All OBD2 vehicles

Updated Reviewed by Renzo Chacca

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What the P0958 code means

A switch tells the computer that the driver has selected the manual (sequential) mode of the gearbox.

It is a plain switch: the computer sees a high or a low voltage depending on its position. The P0958 code is a high signal, and it usually comes from an open circuit or an interrupted ground.

When the signal fails, the gearbox does not go into manual mode, or it drops out of it for no reason.

To confirm it, measure the continuity of each wire between the component connector and the computer connector with the key off. It should be under 1 ohm. An infinite reading means the wire is open. If the wiring is good, measure the component itself: infinite resistance confirms it is open inside.

P0958 code symptoms

  • Check engine light on.
  • Manual mode that does not work.

Likely causes of the P0958 code

  1. Loose or broken connector. The most common cause.
  2. Signal or ground wire cut. The signal climbs up to the reference voltage.
  3. Sensor open inside. Infinite resistance.
  4. Short to 5 V or 12 V from rubbing against another wire in the harness.

How to diagnose the P0958 code step by step

  1. Read the switch value on the scan tool and compare it with the position of the lever.
  2. Inspect the connector for corrosion, water or loose pins.
  3. Check the supply and ground with the key on: the reference should be correct and the ground should drop less than 0.1 volt.
  4. Measure the signal with the connector plugged in and see whether it changes when you move the lever.
  5. Do the wiggle test on the harness with the scan tool in graph mode.
  6. Check continuity of each wire to the computer, which should be under 1 ohm.

How to fix the P0958 code

  • Repair the connector or the wiring.
  • Replace the switch if the tests confirm it is open inside.
  • Correct the real condition if there is one.
  • Clear the P0958 code and verify with a road test.

Technical reference data

  • Switch in the lever.
  • Reference values only: check the manufacturer data for your vehicle.

Brand-specific notes

This code is common on levers that are dirty or have had liquid spilled into them, because the contamination can stop the switch from making contact.

Frequently asked questions about P0958

Can I drive with a P0958 code?
Yes, with caution. The car normally keeps running, but you may lose manual mode.
Does the sensor have to be replaced?
Only if the tests confirm it. The connector and the wiring fail just as often as the switch does.
What does the manual mode of the gearbox do?
A switch tells the computer that the driver has selected the manual (sequential) mode of the gearbox.
How much does it cost to fix P0958?
As a rough guide, between $30 and $300. A reseated connector or a repaired wire is cheap, and a new lever switch costs more.
What does the P0958 code mean?
It means the manual mode signal is higher than the maximum the computer allows. That usually points to an open circuit or a ground that is interrupted.
Will a P0958 code clear itself?
Not while the open circuit is still there. If it was a one-time glitch, the light may go out after several drive cycles.

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Questions about the P0958 code

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