P1583

Code

VOLKSWAGEN P — Powertrain

Transmission Mount Valves Short To B+

Brand: VOLKSWAGEN

Type: P — Powertrain

Views: UK: 18 EN: 23 RU: 26

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Page language: EN

Causes

Damaged wiring (chafed, pinched, or shorted) causing the valve control wire to contact B+
Corroded, bent, or bridged connector terminals at the valve or harness
Internal short inside the valve/solenoid to its supply
Aftermarket accessory or incorrect wiring tapping into the circuit
Faulty Transmission Control Module (TCM) or control module with a failed output stage
Poor ground or battery/charging system problems causing abnormal voltages

Symptoms

MIL/Check Engine or Transmission warning lamp illuminated
Transmission limp mode or degraded shifting behavior
Unusual vibration or harshness if mount valve controls active damping and is disabled
Stored P1583 DTC (may appear with other electrical or transmission codes)

What to check

Retrieve freeze frame and full list of stored codes and freeze data with compatible scan tool
Visual inspection of wiring and connectors along harness from TCM to the valve(s)
Check connector for corrosion, melted plastic or pin displacement at the valve and TCM
Measure key-on battery voltage at battery and at the valve connector
Backprobe valve control pin(s) and monitor for constant battery voltage or PWM as commanded

Signal parameters

Key-on battery voltage at supply: ~11–14.5 V
Control circuit when commanded OFF (driver-to-ground style): should not be at constant B+; expect near 0–1 V if actively grounded or floating when open
When commanded ON (PWM to ground): control line may toggle between ~0 V and up to battery voltage; duty cycle varies by command
Typical solenoid coil resistance (varies by design): commonly tens of ohms (example 10–80 Ω); a short-to-B+ will show very low resistance to B+
Open circuit: infinite/very high resistance between control pin and valve coil; short to B+: near 0 Ω between control pin and battery positive

Diagnostic algorithm

Read and record all trouble codes, freeze frame and relevant transmission parameters with a full-function scan tool; note whether code is current or history.
Perform a visual inspection: follow the harness from the affected valve to the TCM, looking for repairs, chafe points, pinched sections, rodent damage, or connector corrosion.
Disconnect the battery negative terminal before touching connectors if performing repairs. Reconnect for active electrical tests.
With ignition ON (engine off), backprobe the valve connector: measure voltage between control pin and ground. If it reads near battery voltage with no command, suspect short to B+ or internal short.
Command the valve ON/OFF with the scan tool while monitoring the control line. Observe whether the line changes as commanded (PWM or switching) or remains at B+.
Measure coil resistance between the valve’s supply and control pins (consult vehicle data for exact spec). A very low resistance suggests internal short to supply.
If wiring suspected, perform a continuity check: with battery disconnected, check for continuity between the control circuit and battery positive—there should be none. Wiggle harness during checks to reproduce faults.
Isolate sections of harness: disconnect connectors between suspected short area and test each segment until the short location is found.
Repair the wiring or connectors (replace damaged pigtails, pins, harness sections). If the valve shows internal short or fails bench tests, replace the valve/solenoid.
If wiring and valve are good, suspect TCM output stage. Verify TCM supply and grounds; check for other TCM-related codes. Replace or repair TCM only after confirming external circuits are good.
After repair, clear codes and perform functional tests and road test to confirm the fault does not return.

Likely causes

Damaged or chafed harness where the valve control wire contacts a constant B+ source
Corroded/contaminated connector at the valve causing terminal bridging to B+
Internal short in the transmission mount valve / solenoid
Less likely: failed TCM output driver

Fault status

⚠️ Status

Transmission mount valve control circuit: short to battery (B+) detected.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours

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P1583 — Transmission Mount Valves Short To B+