P0701 Transmission control system range or performance problem

Transmission control system range/performance

P0701 in short

P0701 is a general transmission control system fault: the transmission computer saw something outside its expected limits but did not point to one part. Wiring and connectors are the most common cause. Some cars drive normally; others shift badly. Have it scanned soon rather than ignoring it.

The transmission computer checks its inputs and outputs against expected ranges. P0701 is the general code for a range or performance problem in that control system, rather than a fault in one solenoid or sensor.

Because it is general, it is a starting point. The scan tool may show other transmission codes stored alongside it that name the real fault, so those matter more than P0701 itself.

Some vehicles keep driving normally with it. Others lose gears or go into limp-home mode, so the car should not be ignored.

Most likely causes

These are general causes for this code across vehicles. None is specific to one make or model.

  1. Damaged wiring or a corroded connector

    Common general cause
    Why it ranks here
    The cited references list damaged wiring or poor connections in the circuit as a common cause, and the fault is electrical in nature.
    What would change this
    Rises if a scan tool shows an intermittent signal or a connector shows corrosion or damage. Falls if the circuit tests normal.

  2. Aftermarket electronics interfering with module communication

    Possible — needs testing
    Why it ranks here
    TroubleCodes.net lists aftermarket installs among the causes because they can disturb the communication circuits between the engine and transmission computers.
    What would change this
    Rises if the code began after an accessory, alarm or remote starter was fitted. Falls if nothing was added.

  3. Transmission control module needing software or replacement

    Possible — needs testing
    Why it ranks here
    TroubleCodes.net says the control module may need a reflash or replacement, but only after wiring and installs are checked.
    What would change this
    Rises once fluid, wiring and the mechanical parts have been cleared and a software update or module fault is found. Falls if an update is not available or the fault follows another part.
    How to test the transmission control module (tcm)

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Read every stored code and freeze-frame data with a scan tool that can reach the transmission module.

    Low riskTool: scan tool that reads the transmission module

    • IfOther transmission codes are stored with it

      It meansWork from the first code stored, since one fault can set several.

      Go to step 2

    • IfIt is the only code

      It meansCheck the fluid and the wiring next.

      Go to step 2

  2. Have the transmission fluid level and condition checked, following the maker's procedure for your model.

    Best left to a shop

    Warning:Many transmissions are checked hot with the engine running, and some are sealed with no dipstick. Let a shop do this.

    • IfThe fluid is low, dark, burnt or contaminated

      It meansFluid is not the obvious cause here; check the wiring next.

      Go to step 3

    • IfThe fluid is fine

      It meansCheck the circuit wiring and connectors next.

      Go to step 3

  3. Have the wiring and connectors for the circuit inspected and tested, and ask whether a software update exists for your VIN.

    Best left to a shop

    Warning:Testing circuits and software updates need shop equipment; let a shop do this.

Symptoms

  • Check engine light
  • Hard or missed shifts, or stuck in one gear
  • Limp-home mode with reduced power
  • Stalling at stops on some vehicles

How to fix

  1. Have a shop scan the transmission module for every stored code and freeze-frame data before any parts are replaced.

  2. Ask a dealer or shop whether a transmission software update or bulletin applies to your VIN.

Parts and cost context

  • Transmission control module (TCM):Replace the module only after fluid, wiring and mechanical faults are ruled out; it usually needs programming to the vehicle. Labor varies; get a quote.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Chevrolet

  • 2011–2014 · Silverado

    Supported by vehicle data

    GM preliminary information PIP5100A lists P0701 among the codes on trucks that will not move, and has the valve body separator plate orifices inspected for blockage. Only the NHTSA summary was read; whether it is still current is not verified.

  • PIP5100AStatus unverified

    Vehicle will not move forward or reverse (P0701 among codes)

    2011–2014silverado · NHTSA 10112391

    Preliminary information for trucks that will not move in forward or reverse and may store P0701 and other transmission codes. The technician inspects the valve body separator plate orifices for blockage, which the bulletin links to an aftermarket spin-on filter. Also lists GMC Sierra.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

GMC

  • 2002 · Sierra

    Supported by vehicle data

    GM bulletin 030730011B covers delayed engagement and slipping with P0701 among a list of transmission codes on a 2002 Sierra. Only the NHTSA summary was read; the repair is not stated there.

  • 030730011BStatus unverified

    Transmission slips, delayed engagement, DTCs including P0701

    2002sierra · NHTSA 10008638

    Covers a Sierra that slips or engages late, with the engine light and a set of transmission codes including P0701. The NHTSA summary does not say what the repair is.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • P0700Transmission module requests the check engine light

    Same system Common general cause

    P0700 asks you to read the transmission module for its own codes; start there if P0701 is stored with it.

All Transmission codes

P0701 questions

What is the difference between P0700 and P0701?

P0700 only says the transmission computer has set a code and asks you to read it. P0701 names a range or performance problem in the control system itself.

Sources and review

  1. P0701 Trouble Code: Transmission Control System Range/Performance — TroubleCodes.net
  2. Delaware DMV OBD II diagnostic trouble code list — Delaware Division of Motor Vehicles
  3. Chevrolet PIP5100A: Vehicle will not move forward or reverse (P0701 among codes) — NHTSA (manufacturer communications flat file)
  4. Gmc 030730011B: Transmission slips, delayed engagement, DTCs including P0701 — NHTSA (manufacturer communications flat file)
Last reviewed
Written by
Saurabh K.
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