P282A

Control SolenoidKStuck On

P282A is a generic OBD-II powertrain diagnostic trouble code: Control SolenoidKStuck On. It is logged by the engine control unit when the powertrain monitor detects that a specific fault threshold has been exceeded — typically resulting in the malfunction-indicator lamp (MIL / check-engine light) being illuminated.

Code
P282A
Group
Powertrain
System
Powertrain
Severity
Warning (MIL on, possible limp mode)
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What P282A means

P282A is set when the TCM measures a voltage on the shift fork E position sensor signal circuit that falls below the minimum calibrated threshold. This indicates a hard electrical fault such as a short to ground, broken wire, or failed sensor rather than a rationality or performance issue.

Shift fork position sensors provide the TCM with real-time feedback on the mechanical position of each gear fork inside the transmission. A low-circuit fault means the TCM cannot determine where fork E is, preventing reliable control of the associated gear pair. As a protective response, the TCM will typically restrict or inhibit the affected gears and may impose a limp-home strategy.

Diagnosis should focus on the sensor wiring and connector before condemning the sensor itself, since a chafed harness or corroded connector pin is a common source of a low-signal fault. The sensor's reference voltage and ground continuity should be verified at the connector with the harness disconnected to isolate the fault location.

Common causes

Most-frequently reported root causes when P282A is logged.

  • 1
    Signal wire short to ground between the sensor and TCM.
  • 2
    Open or broken sensor ground wire causing the signal to collapse.
  • 3
    Corroded or damaged connector pins at the shift fork E position sensor.
  • 4
    Failed position sensor with an internal short pulling the signal low.
  • 5
    Wiring harness damage from contact with sharp edges or heat sources inside the transmission tunnel.
  • 6
    Moisture ingress into the sensor connector causing a leakage short to ground.
  • 7
    Previous transmission repair that inadvertently pinched or severed the sensor harness.

Symptoms drivers notice

MIL or gearbox warning lamp illuminated.
Transmission unable to engage the gear pair controlled by fork E.
Limp-home mode with a restricted number of available gears.
Harsh or erratic shifting as the TCM works around the unavailable fork position data.
Possible no-movement condition if the limp gear strategy is incompatible with current conditions.

How to diagnose P282A

A typical diagnostic flow when this code is present.

  1. 1
    Read and document all stored DTCs; note whether companion P282B (high circuit) or fork F codes are also present.
  2. 2
    Disconnect the shift fork E position sensor connector and measure sensor supply reference voltage at the connector.
  3. 3
    Measure continuity of the signal wire from the sensor connector back to the TCM connector with the harness disconnected.
  4. 4
    Check for a short to ground on the signal wire by measuring resistance to chassis ground.
  5. 5
    Inspect the sensor connector and harness routing inside the transmission tunnel for chafing, pinching, or corrosion.
  6. 6
    If wiring checks out, substitute a known-good sensor and retest to confirm sensor internal failure.
  7. 7
    Repair or replace the damaged wiring or sensor and clear DTCs; perform a complete drive cycle to verify repair.

Vehicles where we've handled P282A

Platforms in our catalogue with confirmed P282A coverage.

BMW 320D
2016

Related powertrain codes

Frequently asked questions

Can P282A appear without any shift problems?

Unlikely. A low-circuit fault means the TCM has lost the sensor signal entirely, which almost always triggers a protective shift restriction.

Is the sensor inside or outside the transmission?

On most dual-clutch and automated manual transmissions the shift fork sensors are internal. Replacement typically requires at least partial transmission disassembly.

Could the TCM itself cause P282A?

Yes, but TCM internal shorts are rare. Exhaust all wiring and sensor possibilities before considering TCM replacement.

How does P282A differ from P2829?

P2829 is a range/performance fault where the signal is present but incorrect. P282A means the signal voltage is too low, indicating a hard electrical fault.

Disabling P282A in software

RaceTune can permanently disable P282A — and any other OBD-II diagnostic trouble code — on every ECU family we support. The monitor is disabled inside the ECU itself, so the fault stops being logged: the warning light stays off and the engine never enters limp mode for this code. The change is tied to your exact software version.

Permanent
The monitor is disabled in the ECU itself — not just cleared. It cannot return.
Tailored to your file
Each patch is matched to your specific software version — never a one-size-fits-all file.
Reversible
The original file is always preserved. Reflash the stock to return the ECU to factory state.

ECUs with a P282A disable in our catalogue

Confirmed coverage from our recipe database — we support many more families. Upload your file and our identifier will match it automatically.

  • Bosch EDC17C50 verified 1 software version

Software modifications affect emissions compliance and are not road-legal in many jurisdictions. RaceTune service files are intended for motorsport, off-road, and export use.

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