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P1207 — Fuel pressure regulation electrovalve short circuit to negative

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Code

P1207

CITROEN P — Powertrain

Fuel pressure regulation electrovalve short circuit to negative

Brand: CITROEN
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged wiring insulation with contact to chassis ground
  • Corroded or pushed-back connector terminals creating a short
  • Internal short in the fuel pressure regulator / electrovalve coil
  • Faulty ECU driver transistor (control output shorted to ground)
  • Water ingress or contamination in connector or harness
  • Incorrect or poor aftermarket replacement part

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Engine may run poorly, rough idle, or stall
  • Hard starting or extended cranking
  • Reduced engine power or limp-home behavior (fuel pressure not regulated)
  • Poor fuel economy or surging
  • Possible no-start if regulator stays stuck and fuel pressure drops or rises abnormally

What to check

  • Read and record trouble codes and freeze-frame data with a diagnostic tool
  • Inspect harness and connector at the fuel pressure regulator for heat damage, corrosion, water, chafing or crushed insulation
  • Visually inspect wiring routing from regulator to ECU and any body/engine contact points
  • Check connector pins for pushed-out or bent terminals
  • Measure DC resistance of the regulator coil between its power and control terminals (spec varies by model)
  • Check for continuity from control pin to chassis ground (should not be low resistance)

Signal parameters

  • Typical fuel pressure regulator coil resistance (model-dependent) generally in the low ohms to tens of ohms range — commonly ~10–30 Ω (consult vehicle data)
  • Control signal: ECU typically drivers the valve with a switched ground or PWM; duty cycle varies with engine load (0–100%)
  • Expected: with connector disconnected there should be no low-resistance path from control pin to chassis ground (
  • PWM frequency varies by design; common range is ~50–200 Hz (refer to manufacturer-specific data)

Diagnostic algorithm

  1. Connect OBD scanner, confirm P1207 and note freeze-frame and related fuel/engine codes.
  2. Visually inspect regulator connector and wiring for damage, corrosion, or water ingress. Repair any visible damage and retest.
  3. With ignition off, disconnect regulator connector. Measure resistance between regulator control terminal and chassis ground. If low resistance/short remains, problem is in harness or ECU. If open/high resistance, problem is at regulator.
  4. Measure coil resistance across regulator terminals (spec sheet value preferred). A very low resistance suggests internal short; open or very high suggests open circuit.
  5. If harness side shows short to ground, isolate by disconnecting intermediate connectors and sections until the shorted segment is found. Repair damaged wiring (replace harness or splice with proper methods).
  6. If short disappears when harness disconnected from ECU, suspect ECU output. Confirm by checking for supply voltage and performing current draw tests. Avoid replacing ECU until harness and actuator proven good.
  7. Bench-test suspected regulator with appropriate 12 V supply and current limiting to verify behavior before replacing.
  8. After repair, clear codes, perform actuator tests and a road test, and confirm that P1207 does not return.
  9. If ECU replacement is necessary, follow manufacturer security and programming procedures.

Likely causes

  • Chafed control wire rubbed through to chassis or engine block
  • Connector contamination/corrosion causing low-resistance path to ground
  • Electrovalve coil failed internally and now shorted
  • Loose or damaged engine ground or battery negative connection aggravating circuit behavior
  • Less likely: ECU output stage failed (verify after isolating harness and actuator)

Fault status

⚠️ Status
Fuel pressure regulator control circuit — short to negative (ground) detected by ECU.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

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Code

P1207

DS P — Powertrain

Fuel pressure regulation electrovalve short circuit to negative

Brand: DS
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged wiring insulation with contact to chassis ground
  • Corroded or pushed-back connector terminals creating a short
  • Internal short in the fuel pressure regulator / electrovalve coil
  • Faulty ECU driver transistor (control output shorted to ground)
  • Water ingress or contamination in connector or harness
  • Incorrect or poor aftermarket replacement part

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Engine may run poorly, rough idle, or stall
  • Hard starting or extended cranking
  • Reduced engine power or limp-home behavior (fuel pressure not regulated)
  • Poor fuel economy or surging
  • Possible no-start if regulator stays stuck and fuel pressure drops or rises abnormally

What to check

  • Read and record trouble codes and freeze-frame data with a diagnostic tool
  • Inspect harness and connector at the fuel pressure regulator for heat damage, corrosion, water, chafing or crushed insulation
  • Visually inspect wiring routing from regulator to ECU and any body/engine contact points
  • Check connector pins for pushed-out or bent terminals
  • Measure DC resistance of the regulator coil between its power and control terminals (spec varies by model)
  • Check for continuity from control pin to chassis ground (should not be low resistance)

Signal parameters

  • Typical fuel pressure regulator coil resistance (model-dependent) generally in the low ohms to tens of ohms range — commonly ~10–30 Ω (consult vehicle data)
  • Control signal: ECU typically drivers the valve with a switched ground or PWM; duty cycle varies with engine load (0–100%)
  • Expected: with connector disconnected there should be no low-resistance path from control pin to chassis ground (
  • PWM frequency varies by design; common range is ~50–200 Hz (refer to manufacturer-specific data)

Diagnostic algorithm

  1. Connect OBD scanner, confirm P1207 and note freeze-frame and related fuel/engine codes.
  2. Visually inspect regulator connector and wiring for damage, corrosion, or water ingress. Repair any visible damage and retest.
  3. With ignition off, disconnect regulator connector. Measure resistance between regulator control terminal and chassis ground. If low resistance/short remains, problem is in harness or ECU. If open/high resistance, problem is at regulator.
  4. Measure coil resistance across regulator terminals (spec sheet value preferred). A very low resistance suggests internal short; open or very high suggests open circuit.
  5. If harness side shows short to ground, isolate by disconnecting intermediate connectors and sections until the shorted segment is found. Repair damaged wiring (replace harness or splice with proper methods).
  6. If short disappears when harness disconnected from ECU, suspect ECU output. Confirm by checking for supply voltage and performing current draw tests. Avoid replacing ECU until harness and actuator proven good.
  7. Bench-test suspected regulator with appropriate 12 V supply and current limiting to verify behavior before replacing.
  8. After repair, clear codes, perform actuator tests and a road test, and confirm that P1207 does not return.
  9. If ECU replacement is necessary, follow manufacturer security and programming procedures.

Likely causes

  • Chafed control wire rubbed through to chassis or engine block
  • Connector contamination/corrosion causing low-resistance path to ground
  • Electrovalve coil failed internally and now shorted
  • Loose or damaged engine ground or battery negative connection aggravating circuit behavior
  • Less likely: ECU output stage failed (verify after isolating harness and actuator)

Fault status

⚠️ Status
Fuel pressure regulator control circuit — short to negative (ground) detected by ECU.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

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Code

P1207

JAGUAR P — Powertrain

Cylinder 7 Injector Circuit Open/Shorted

Brand: JAGUAR
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged wiring insulation with contact to chassis ground
  • Corroded or pushed-back connector terminals creating a short
  • Internal short in the fuel pressure regulator / electrovalve coil
  • Faulty ECU driver transistor (control output shorted to ground)
  • Water ingress or contamination in connector or harness
  • Incorrect or poor aftermarket replacement part

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Engine may run poorly, rough idle, or stall
  • Hard starting or extended cranking
  • Reduced engine power or limp-home behavior (fuel pressure not regulated)
  • Poor fuel economy or surging
  • Possible no-start if regulator stays stuck and fuel pressure drops or rises abnormally

What to check

  • Read and record trouble codes and freeze-frame data with a diagnostic tool
  • Inspect harness and connector at the fuel pressure regulator for heat damage, corrosion, water, chafing or crushed insulation
  • Visually inspect wiring routing from regulator to ECU and any body/engine contact points
  • Check connector pins for pushed-out or bent terminals
  • Measure DC resistance of the regulator coil between its power and control terminals (spec varies by model)
  • Check for continuity from control pin to chassis ground (should not be low resistance)

Signal parameters

  • Typical fuel pressure regulator coil resistance (model-dependent) generally in the low ohms to tens of ohms range — commonly ~10–30 Ω (consult vehicle data)
  • Control signal: ECU typically drivers the valve with a switched ground or PWM; duty cycle varies with engine load (0–100%)
  • Expected: with connector disconnected there should be no low-resistance path from control pin to chassis ground (
  • PWM frequency varies by design; common range is ~50–200 Hz (refer to manufacturer-specific data)

Diagnostic algorithm

  1. Connect OBD scanner, confirm P1207 and note freeze-frame and related fuel/engine codes.
  2. Visually inspect regulator connector and wiring for damage, corrosion, or water ingress. Repair any visible damage and retest.
  3. With ignition off, disconnect regulator connector. Measure resistance between regulator control terminal and chassis ground. If low resistance/short remains, problem is in harness or ECU. If open/high resistance, problem is at regulator.
  4. Measure coil resistance across regulator terminals (spec sheet value preferred). A very low resistance suggests internal short; open or very high suggests open circuit.
  5. If harness side shows short to ground, isolate by disconnecting intermediate connectors and sections until the shorted segment is found. Repair damaged wiring (replace harness or splice with proper methods).
  6. If short disappears when harness disconnected from ECU, suspect ECU output. Confirm by checking for supply voltage and performing current draw tests. Avoid replacing ECU until harness and actuator proven good.
  7. Bench-test suspected regulator with appropriate 12 V supply and current limiting to verify behavior before replacing.
  8. After repair, clear codes, perform actuator tests and a road test, and confirm that P1207 does not return.
  9. If ECU replacement is necessary, follow manufacturer security and programming procedures.

Likely causes

  • Chafed control wire rubbed through to chassis or engine block
  • Connector contamination/corrosion causing low-resistance path to ground
  • Electrovalve coil failed internally and now shorted
  • Loose or damaged engine ground or battery negative connection aggravating circuit behavior
  • Less likely: ECU output stage failed (verify after isolating harness and actuator)

Fault status

⚠️ Status
Fuel pressure regulator control circuit — short to negative (ground) detected by ECU.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

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Code

P1207

PEUGEOT P — Powertrain

Fuel pressure regulation electrovalve short circuit to negative

Brand: PEUGEOT
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged wiring insulation with contact to chassis ground
  • Corroded or pushed-back connector terminals creating a short
  • Internal short in the fuel pressure regulator / electrovalve coil
  • Faulty ECU driver transistor (control output shorted to ground)
  • Water ingress or contamination in connector or harness
  • Incorrect or poor aftermarket replacement part

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Engine may run poorly, rough idle, or stall
  • Hard starting or extended cranking
  • Reduced engine power or limp-home behavior (fuel pressure not regulated)
  • Poor fuel economy or surging
  • Possible no-start if regulator stays stuck and fuel pressure drops or rises abnormally

What to check

  • Read and record trouble codes and freeze-frame data with a diagnostic tool
  • Inspect harness and connector at the fuel pressure regulator for heat damage, corrosion, water, chafing or crushed insulation
  • Visually inspect wiring routing from regulator to ECU and any body/engine contact points
  • Check connector pins for pushed-out or bent terminals
  • Measure DC resistance of the regulator coil between its power and control terminals (spec varies by model)
  • Check for continuity from control pin to chassis ground (should not be low resistance)

Signal parameters

  • Typical fuel pressure regulator coil resistance (model-dependent) generally in the low ohms to tens of ohms range — commonly ~10–30 Ω (consult vehicle data)
  • Control signal: ECU typically drivers the valve with a switched ground or PWM; duty cycle varies with engine load (0–100%)
  • Expected: with connector disconnected there should be no low-resistance path from control pin to chassis ground (
  • PWM frequency varies by design; common range is ~50–200 Hz (refer to manufacturer-specific data)

Diagnostic algorithm

  1. Connect OBD scanner, confirm P1207 and note freeze-frame and related fuel/engine codes.
  2. Visually inspect regulator connector and wiring for damage, corrosion, or water ingress. Repair any visible damage and retest.
  3. With ignition off, disconnect regulator connector. Measure resistance between regulator control terminal and chassis ground. If low resistance/short remains, problem is in harness or ECU. If open/high resistance, problem is at regulator.
  4. Measure coil resistance across regulator terminals (spec sheet value preferred). A very low resistance suggests internal short; open or very high suggests open circuit.
  5. If harness side shows short to ground, isolate by disconnecting intermediate connectors and sections until the shorted segment is found. Repair damaged wiring (replace harness or splice with proper methods).
  6. If short disappears when harness disconnected from ECU, suspect ECU output. Confirm by checking for supply voltage and performing current draw tests. Avoid replacing ECU until harness and actuator proven good.
  7. Bench-test suspected regulator with appropriate 12 V supply and current limiting to verify behavior before replacing.
  8. After repair, clear codes, perform actuator tests and a road test, and confirm that P1207 does not return.
  9. If ECU replacement is necessary, follow manufacturer security and programming procedures.

Likely causes

  • Chafed control wire rubbed through to chassis or engine block
  • Connector contamination/corrosion causing low-resistance path to ground
  • Electrovalve coil failed internally and now shorted
  • Loose or damaged engine ground or battery negative connection aggravating circuit behavior
  • Less likely: ECU output stage failed (verify after isolating harness and actuator)

Fault status

⚠️ Status
Fuel pressure regulator control circuit — short to negative (ground) detected by ECU.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

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Code

P1207

RAM P — Powertrain

Cylinder Head Temperature Sensor Circuit Performance

Brand: RAM
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged wiring insulation with contact to chassis ground
  • Corroded or pushed-back connector terminals creating a short
  • Internal short in the fuel pressure regulator / electrovalve coil
  • Faulty ECU driver transistor (control output shorted to ground)
  • Water ingress or contamination in connector or harness
  • Incorrect or poor aftermarket replacement part

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Engine may run poorly, rough idle, or stall
  • Hard starting or extended cranking
  • Reduced engine power or limp-home behavior (fuel pressure not regulated)
  • Poor fuel economy or surging
  • Possible no-start if regulator stays stuck and fuel pressure drops or rises abnormally

What to check

  • Read and record trouble codes and freeze-frame data with a diagnostic tool
  • Inspect harness and connector at the fuel pressure regulator for heat damage, corrosion, water, chafing or crushed insulation
  • Visually inspect wiring routing from regulator to ECU and any body/engine contact points
  • Check connector pins for pushed-out or bent terminals
  • Measure DC resistance of the regulator coil between its power and control terminals (spec varies by model)
  • Check for continuity from control pin to chassis ground (should not be low resistance)

Signal parameters

  • Typical fuel pressure regulator coil resistance (model-dependent) generally in the low ohms to tens of ohms range — commonly ~10–30 Ω (consult vehicle data)
  • Control signal: ECU typically drivers the valve with a switched ground or PWM; duty cycle varies with engine load (0–100%)
  • Expected: with connector disconnected there should be no low-resistance path from control pin to chassis ground (
  • PWM frequency varies by design; common range is ~50–200 Hz (refer to manufacturer-specific data)

Diagnostic algorithm

  1. Connect OBD scanner, confirm P1207 and note freeze-frame and related fuel/engine codes.
  2. Visually inspect regulator connector and wiring for damage, corrosion, or water ingress. Repair any visible damage and retest.
  3. With ignition off, disconnect regulator connector. Measure resistance between regulator control terminal and chassis ground. If low resistance/short remains, problem is in harness or ECU. If open/high resistance, problem is at regulator.
  4. Measure coil resistance across regulator terminals (spec sheet value preferred). A very low resistance suggests internal short; open or very high suggests open circuit.
  5. If harness side shows short to ground, isolate by disconnecting intermediate connectors and sections until the shorted segment is found. Repair damaged wiring (replace harness or splice with proper methods).
  6. If short disappears when harness disconnected from ECU, suspect ECU output. Confirm by checking for supply voltage and performing current draw tests. Avoid replacing ECU until harness and actuator proven good.
  7. Bench-test suspected regulator with appropriate 12 V supply and current limiting to verify behavior before replacing.
  8. After repair, clear codes, perform actuator tests and a road test, and confirm that P1207 does not return.
  9. If ECU replacement is necessary, follow manufacturer security and programming procedures.

Likely causes

  • Chafed control wire rubbed through to chassis or engine block
  • Connector contamination/corrosion causing low-resistance path to ground
  • Electrovalve coil failed internally and now shorted
  • Loose or damaged engine ground or battery negative connection aggravating circuit behavior
  • Less likely: ECU output stage failed (verify after isolating harness and actuator)

Fault status

⚠️ Status
Fuel pressure regulator control circuit — short to negative (ground) detected by ECU.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

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Code

P1207

SAAB P — Powertrain

AIR Pump Relay, Output From Control Module High

Brand: SAAB
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged wiring insulation with contact to chassis ground
  • Corroded or pushed-back connector terminals creating a short
  • Internal short in the fuel pressure regulator / electrovalve coil
  • Faulty ECU driver transistor (control output shorted to ground)
  • Water ingress or contamination in connector or harness
  • Incorrect or poor aftermarket replacement part

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Engine may run poorly, rough idle, or stall
  • Hard starting or extended cranking
  • Reduced engine power or limp-home behavior (fuel pressure not regulated)
  • Poor fuel economy or surging
  • Possible no-start if regulator stays stuck and fuel pressure drops or rises abnormally

What to check

  • Read and record trouble codes and freeze-frame data with a diagnostic tool
  • Inspect harness and connector at the fuel pressure regulator for heat damage, corrosion, water, chafing or crushed insulation
  • Visually inspect wiring routing from regulator to ECU and any body/engine contact points
  • Check connector pins for pushed-out or bent terminals
  • Measure DC resistance of the regulator coil between its power and control terminals (spec varies by model)
  • Check for continuity from control pin to chassis ground (should not be low resistance)

Signal parameters

  • Typical fuel pressure regulator coil resistance (model-dependent) generally in the low ohms to tens of ohms range — commonly ~10–30 Ω (consult vehicle data)
  • Control signal: ECU typically drivers the valve with a switched ground or PWM; duty cycle varies with engine load (0–100%)
  • Expected: with connector disconnected there should be no low-resistance path from control pin to chassis ground (
  • PWM frequency varies by design; common range is ~50–200 Hz (refer to manufacturer-specific data)

Diagnostic algorithm

  1. Connect OBD scanner, confirm P1207 and note freeze-frame and related fuel/engine codes.
  2. Visually inspect regulator connector and wiring for damage, corrosion, or water ingress. Repair any visible damage and retest.
  3. With ignition off, disconnect regulator connector. Measure resistance between regulator control terminal and chassis ground. If low resistance/short remains, problem is in harness or ECU. If open/high resistance, problem is at regulator.
  4. Measure coil resistance across regulator terminals (spec sheet value preferred). A very low resistance suggests internal short; open or very high suggests open circuit.
  5. If harness side shows short to ground, isolate by disconnecting intermediate connectors and sections until the shorted segment is found. Repair damaged wiring (replace harness or splice with proper methods).
  6. If short disappears when harness disconnected from ECU, suspect ECU output. Confirm by checking for supply voltage and performing current draw tests. Avoid replacing ECU until harness and actuator proven good.
  7. Bench-test suspected regulator with appropriate 12 V supply and current limiting to verify behavior before replacing.
  8. After repair, clear codes, perform actuator tests and a road test, and confirm that P1207 does not return.
  9. If ECU replacement is necessary, follow manufacturer security and programming procedures.

Likely causes

  • Chafed control wire rubbed through to chassis or engine block
  • Connector contamination/corrosion causing low-resistance path to ground
  • Electrovalve coil failed internally and now shorted
  • Loose or damaged engine ground or battery negative connection aggravating circuit behavior
  • Less likely: ECU output stage failed (verify after isolating harness and actuator)

Fault status

⚠️ Status
Fuel pressure regulator control circuit — short to negative (ground) detected by ECU.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

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+100 karma for a short comment :)
Send to email
Code

P1207

VOLKSWAGEN P — Powertrain

Cylinder 7 Fuel Injector Circuit Electrical Malfunction

AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Damaged wiring insulation with contact to chassis ground
  • Corroded or pushed-back connector terminals creating a short
  • Internal short in the fuel pressure regulator / electrovalve coil
  • Faulty ECU driver transistor (control output shorted to ground)
  • Water ingress or contamination in connector or harness
  • Incorrect or poor aftermarket replacement part

Symptoms

  • Malfunction Indicator Lamp (MIL) illuminated
  • Engine may run poorly, rough idle, or stall
  • Hard starting or extended cranking
  • Reduced engine power or limp-home behavior (fuel pressure not regulated)
  • Poor fuel economy or surging
  • Possible no-start if regulator stays stuck and fuel pressure drops or rises abnormally

What to check

  • Read and record trouble codes and freeze-frame data with a diagnostic tool
  • Inspect harness and connector at the fuel pressure regulator for heat damage, corrosion, water, chafing or crushed insulation
  • Visually inspect wiring routing from regulator to ECU and any body/engine contact points
  • Check connector pins for pushed-out or bent terminals
  • Measure DC resistance of the regulator coil between its power and control terminals (spec varies by model)
  • Check for continuity from control pin to chassis ground (should not be low resistance)

Signal parameters

  • Typical fuel pressure regulator coil resistance (model-dependent) generally in the low ohms to tens of ohms range — commonly ~10–30 Ω (consult vehicle data)
  • Control signal: ECU typically drivers the valve with a switched ground or PWM; duty cycle varies with engine load (0–100%)
  • Expected: with connector disconnected there should be no low-resistance path from control pin to chassis ground (
  • PWM frequency varies by design; common range is ~50–200 Hz (refer to manufacturer-specific data)

Diagnostic algorithm

  1. Connect OBD scanner, confirm P1207 and note freeze-frame and related fuel/engine codes.
  2. Visually inspect regulator connector and wiring for damage, corrosion, or water ingress. Repair any visible damage and retest.
  3. With ignition off, disconnect regulator connector. Measure resistance between regulator control terminal and chassis ground. If low resistance/short remains, problem is in harness or ECU. If open/high resistance, problem is at regulator.
  4. Measure coil resistance across regulator terminals (spec sheet value preferred). A very low resistance suggests internal short; open or very high suggests open circuit.
  5. If harness side shows short to ground, isolate by disconnecting intermediate connectors and sections until the shorted segment is found. Repair damaged wiring (replace harness or splice with proper methods).
  6. If short disappears when harness disconnected from ECU, suspect ECU output. Confirm by checking for supply voltage and performing current draw tests. Avoid replacing ECU until harness and actuator proven good.
  7. Bench-test suspected regulator with appropriate 12 V supply and current limiting to verify behavior before replacing.
  8. After repair, clear codes, perform actuator tests and a road test, and confirm that P1207 does not return.
  9. If ECU replacement is necessary, follow manufacturer security and programming procedures.

Likely causes

  • Chafed control wire rubbed through to chassis or engine block
  • Connector contamination/corrosion causing low-resistance path to ground
  • Electrovalve coil failed internally and now shorted
  • Loose or damaged engine ground or battery negative connection aggravating circuit behavior
  • Less likely: ECU output stage failed (verify after isolating harness and actuator)

Fault status

⚠️ Status
Fuel pressure regulator control circuit — short to negative (ground) detected by ECU.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-2.5 hours

Similar codes

626

Browse 626 VOLKSWAGEN manuals: repair procedures, diagnostics, wiring diagrams, component locations, service data and Labor Times by year, model and trim.

VOLKSWAGEN

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