P0883 The transmission control module's power input voltage is too high

TCM power input signal high

Severity not verified — if the car runs badly, have it inspected

TroubleCodes.net says an active code can put the transmission in limp mode, and an Allison bulletin says the transmission may shift into neutral while driving, but we found no source that rates how long you can drive, so we do not rate it.

It gets more serious if:

  • Stop: The transmission shifts into neutral or loses drive while you are moving. An Allison bulletin summary says this code can cause a shift into neutral while driving; pull over safely and do not keep driving.

Source: how we rate severity

P0883 in short

P0883 means the transmission control module is seeing too much voltage on its power input. TroubleCodes.net points first to an overcharging alternator, then to rubbed or corroded wiring, damaged connector pins, or a faulty computer. Jeep has bulletins for it on the 2023 Compass, and Allison warns of a shift to neutral.

The transmission control module (TCM) monitors the supply voltage it receives. P0883 sets when that voltage is higher than expected, so the fault may be the supply or the wiring, not the module.

TroubleCodes.net starts with the charging system, since an alternator that overcharges is the main cause, then wiring faults and connector pins at the PCM or TIPM, and last the PCM. It says an active code can leave the transmission in limp mode and not shifting.

Owners link it to electrical faults: a 2008 Dodge Grand Caravan owner had P0883 with P0685 (ASD relay circuit) and flickering lights and believes the TIPM was at fault. Jeep's 2023 Compass bulletins cover a TCM software update and a harness rubbing on a sharp PCM edge. An Allison Transmission bulletin warns that with P0883 the transmission may shift into neutral while driving.

Most likely causes

  1. Alternator overcharging

    Common general cause
    Why it ranks here
    TroubleCodes.net says high voltage codes typically come from the alternator overcharging and tells you to test the charging system first.
    What would change this
    Rises if running battery voltage is above the normal charging range. Falls if charging voltage is normal.

  2. Rubbed, broken or corroded transmission wiring or damaged connector pins

    Supported by vehicle data
    Why it ranks here
    TroubleCodes.net lists wiring and connector pin damage, and Jeep's 2023 Compass bulletin lists P0883 among the codes set by harness wiring rubbing on a sharp PCM edge.
    What would change this
    Rises if the harness shows a rub-through or the connector pins are bent or corroded. Falls if wiring and pins are intact.

  3. TCM software that needs updating (2023 Jeep Compass)

    Supported by vehicle data
    Why it ranks here
    Jeep bulletin 2103023 says P0883 is addressed by reprogramming the TCM on the 2023 Compass.
    What would change this
    Rises if a dealer finds your VIN covered and the TCM is not at the latest software. Falls if it is already current.
    How to test the transmission control module (tcm)

  4. TIPM or PCM fault

    Possible — needs testing
    Why it ranks here
    TroubleCodes.net lists the PCM last, and a Grand Caravan owner reports P0883 with an ASD relay code and flickering lights and suspects the TIPM. The owner's cause was not confirmed.
    What would change this
    Rises if the charging system and wiring test good and other power-distribution codes are stored. Falls if a charging or wiring fault is found.

What to test first

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

  1. Read all stored codes and note any ASD relay, TIPM or other voltage codes stored with P0883.

    Low riskTool: OBD-II scan tool

    • IfOther power-distribution or voltage codes are stored

      It meansSuspect the charging system or power distribution first.

      Go to step 2

    • IfP0883 is the only code

      It meansStart with the charging system anyway.

      Go to step 2

  2. Measure battery voltage with the engine running and compare it with the normal charging range.

    Use cautionTool: multimeter

    Warning:Keep hands, clothing and tools clear of the belt and fan with the engine running, and do not short the battery terminals.

  3. Ask a dealer whether your VIN has a TCM update or a wiring repair bulletin for P0883.

    Low risk

  4. Have a shop inspect the transmission harness for rub-through and the TCM, PCM and TIPM connectors for bent pins, corrosion or moisture.

    Best left to a shopTool: multimeter, scan tool

    Warning:Probing live control module connectors can short pins and damage the module; leave this to a shop.

Symptoms

  • Check engine light
  • Transmission in limp mode and not shifting Gets more serious: stop and have it checked.
  • Harsh gear engagement
  • Transmission shifts into neutral while driving Gets more serious: stop and have it checked.

How to fix

  1. Have the battery and alternator output tested, and have the transmission harness and TCM connectors inspected for rubbed wiring or damaged pins.

  2. Ask a dealer whether your VIN has a TCM software update or a wiring bulletin for P0883.

On your vehicle

Jeep

  • 2023 · Compass

    Supported by vehicle data

    Three Jeep bulletins cover P0883 on the 2023 Compass: a TCM software update, a harness rubbing on a sharp PCM edge, and a general check engine light bulletin. Only the NHTSA summaries were read, and whether they are still current is not verified.

  • 2103023Status unverified

    Flash: TCM updates, P0883

    2023compass · NHTSA 10248955

    Reprogram the transmission control module with the latest software when P0883-00 TCM Power Input Signal High is set.

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

  • 0814123Status unverified

    Transmission harness wiring rubbing against PCM sharp edge

    2023compass · NHTSA 10241078

    Lists P0882, P0883, P0983 and P0707 with limp-home mode. The repair is foil tape and possibly a wiring harness repair.

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

  • S2321000003Status unverified

    MIL with P0882 or P0883

    2023compass · NHTSA 10236872

    Check engine light with P0882 TCM Power Input Signal Low or P0883 TCM Power Input Signal High set. The NHTSA summary does not describe the repair.

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

Dodge

  • 2008 · Grand Caravan

    Possible — needs testing

    An owner of a 2008 Grand Caravan reported P0883 with P0685 and flickering lights, and believes the TIPM needs replacing. This is an owner report and the cause was not confirmed.

  • P0882The transmission computer's power input voltage is too low

    Same system Supported by vehicle data

    P0882 is the low-voltage version of the same TCM power input fault. Jeep's 2023 Compass bulletins list the two together.

All Transmission codes

Sources and review

  1. P0883 - Transmission Control Module (TCM) Power Input Signal High — TroubleCodes.net
  2. Allison Transmission SB-TT7718EN: P0883 TCM power input signal high — NHTSA (manufacturer technical service bulletin summary)
  3. Jeep Compass 2023: Transmission Harness Wiring Rubbing Against PCM Sharp Edge — NHTSA (manufacturer technical service bulletin summary)
  4. Jeep Compass 2023: Flash: Transmission Control Module (TCM) Updates, P0883 — NHTSA (manufacturer technical service bulletin summary)
  5. NHTSA complaint ODI 10735653: 2008 Dodge Grand Caravan code readout — NHTSA Office of Defects Investigation
  6. Jeep Compass 2023: MIL with P0882 or P0883 — NHTSA (manufacturer technical service bulletin summary)
  7. NHTSA complaint ODI 10597443: 2008 Jeep Liberty P0883 — NHTSA Office of Defects Investigation
Last reviewed
Written by
Saurabh K.
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