P0953Generic code

P0953 Code: Auto Shift Manual Control Circuit High

The P0953 code means the signal from the manual shift control circuit is above its maximum value. It usually points to an open circuit or an interrupted ground. The effect is that manual mode stops working.

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 P0953 code means

In automated and automatic transmissions with a sequential mode, the lever or the steering wheel paddles send upshift and downshift commands to the computer.

It works as a switch: the computer sees a high or a low voltage depending on its position. The P0953 code is a high signal, and it usually comes from an open circuit or an interrupted ground.

If the signal fails, manual mode stops working, but the gearbox usually carries on in automatic. On steering wheel paddles, check the clockspring.

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.

P0953 code symptoms

  • Check engine light on.
  • Manual mode disabled.

Likely causes of the P0953 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 P0953 code step by step

  1. Read the switch or sensor value on the scan tool and compare it with what the lever or paddles are doing.
  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 or paddles.
  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 P0953 code

  • Repair the connector or the wiring.
  • Replace the sensor if the tests confirm it is open inside.
  • Correct the real condition if there is one.
  • Clear the P0953 code and verify with a road test.

Technical reference data

  • Switches or Hall sensors in the lever or in the paddles.
  • Reference values only: check the manufacturer data for your vehicle.

Brand-specific notes

On steering wheel paddles, the clockspring is a common cause of this code. If the paddles work only at certain steering angles, look there first.

Frequently asked questions about P0953

Can I drive with a P0953 code?
Yes, with caution. The gearbox usually keeps working in automatic, but manual shifting may not be available.
Does the sensor have to be replaced?
Only if the tests confirm it. The connector and the wiring fail just as often as the sensor does.
What does the manual shift control do?
In automated and automatic transmissions with a sequential mode, the lever or the steering wheel paddles send upshift and downshift commands to the computer.
How much does it cost to fix P0953?
As a rough guide, between $30 and $300. A reseated connector or a spliced wire is cheap, and a clockspring or switch costs more.
What does the P0953 code mean?
It means the manual shift control signal is higher than the maximum the computer allows. That usually points to an open circuit or a ground that is interrupted.
Will a P0953 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 P0953 code

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