Home / DTC / P0205 — Fuel injector failure, Powertrain Control Module (PCM) failure, Wiring issue

P0205 — Fuel injector failure, Powertrain Control Module (PCM) failure, Wiring issue

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Code

P0205

AUDI P — Powertrain

Fuel injector failure, Powertrain Control Module (PCM) failure, Wiring issue

Brand: AUDI
Views: UK: 33 EN: 90 RU: 59
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring/connectors to injector #5
  • Faulty fuel injector (stuck open, stuck closed, internal short)
  • Poor connector pin contact or corrosion
  • Blown fuse or loss of injector supply voltage
  • Faulty PCM (driver circuit) or poor PCM ground
  • Intermittent wiring damage (chafing, high resistance)

Symptoms

  • Check Engine Light (MIL) on
  • Rough idle or vibration
  • Engine misfire, often cylinder 5 related
  • Reduced power, hesitation under load
  • Poor fuel economy
  • Possible hard start or stalling

What to check

  • Scan for stored codes and freeze frame data; note related codes (misfire, fuel trim).
  • Visual inspection of injector harness/connector at cylinder 5 for damage or corrosion.
  • Wiggle test wiring while engine is running (if safe) to reproduce fault.
  • Check fuel injector supply voltage (battery/ignition) at connector with key on.
  • Measure injector coil resistance and compare to service spec.
  • Back-probe injector connector while cranking/running to confirm PCM pulse and voltage.

Signal parameters

  • Injector supply voltage: approx. battery voltage with key on (no injection commanded).
  • Injector driver: PCM switches injector to ground; expect near 0V (low) during pulse on driver side.
  • Injector coil resistance: compare to OEM spec (typical ranges vary; low-impedance injectors ~2–6 Ω, high-impedance ~10–18 Ω).
  • Injector pulse width: typically 1–10 ms depending on RPM/load; visible on oscilloscope as square pulses.
  • No pulse or continuous open circuit indicates open wiring or failed injector; constant ground indicates shorted driver.

Diagnostic algorithm

  1. Retrieve codes and live data. Confirm P0205 and note any related P02xx or misfire codes (e.g., P0305).
  2. Perform visual check of injector #5 connector and wiring for corrosion, bent pins, or damage. Repair as needed.
  3. With ignition ON (engine off), verify battery voltage at injector supply terminal of the connector.
  4. Measure injector coil resistance at the connector or removed injector; compare to OEM spec. Replace if out of range.
  5. Back-probe the injector connector while cranking/running to confirm PCM is commanding pulses (use a noid light or oscilloscope).
  6. If no pulse from PCM but wiring and supply are good, check continuity between injector connector and PCM driver pin for opens/shorts to ground/voltage. Repair wiring if needed.
  7. Swap the suspected injector with another cylinder and clear codes. If fault moves to the swapped cylinder, replace the injector. If it stays on cylinder 5, suspect wiring or PCM.
  8. If wiring and injector check good, check PCM grounds and power feeds. Replace PCM only after all wiring and injector options are eliminated and verified.
  9. After repair, clear codes and perform a road test and re-scan to confirm code does not return.

Likely causes

  • Corroded/loose injector connector at cylinder 5
  • Broken or shorted harness between injector and PCM
  • Injector coil open or shorted
  • Low or missing ignition/fuel system voltage to injector rail
  • PCM driver failure (less common) after wiring checks

Fault status

⚠️ Status
Injector circuit fault detected for cylinder 5 (P0205). PCM detected open/short/no pulse to injector. MIL illuminated. Inspect wiring, connector, injector and PCM driver.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P0205

Generic P — Powertrain

Cylinder 5 Injector A Circuit

Brand: Generic
Views: UK: 37 EN: 88 RU: 58
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring/connectors to injector #5
  • Faulty fuel injector (stuck open, stuck closed, internal short)
  • Poor connector pin contact or corrosion
  • Blown fuse or loss of injector supply voltage
  • Faulty PCM (driver circuit) or poor PCM ground
  • Intermittent wiring damage (chafing, high resistance)

Symptoms

  • Check Engine Light (MIL) on
  • Rough idle or vibration
  • Engine misfire, often cylinder 5 related
  • Reduced power, hesitation under load
  • Poor fuel economy
  • Possible hard start or stalling

What to check

  • Scan for stored codes and freeze frame data; note related codes (misfire, fuel trim).
  • Visual inspection of injector harness/connector at cylinder 5 for damage or corrosion.
  • Wiggle test wiring while engine is running (if safe) to reproduce fault.
  • Check fuel injector supply voltage (battery/ignition) at connector with key on.
  • Measure injector coil resistance and compare to service spec.
  • Back-probe injector connector while cranking/running to confirm PCM pulse and voltage.

Signal parameters

  • Injector supply voltage: approx. battery voltage with key on (no injection commanded).
  • Injector driver: PCM switches injector to ground; expect near 0V (low) during pulse on driver side.
  • Injector coil resistance: compare to OEM spec (typical ranges vary; low-impedance injectors ~2–6 Ω, high-impedance ~10–18 Ω).
  • Injector pulse width: typically 1–10 ms depending on RPM/load; visible on oscilloscope as square pulses.
  • No pulse or continuous open circuit indicates open wiring or failed injector; constant ground indicates shorted driver.

Diagnostic algorithm

  1. Retrieve codes and live data. Confirm P0205 and note any related P02xx or misfire codes (e.g., P0305).
  2. Perform visual check of injector #5 connector and wiring for corrosion, bent pins, or damage. Repair as needed.
  3. With ignition ON (engine off), verify battery voltage at injector supply terminal of the connector.
  4. Measure injector coil resistance at the connector or removed injector; compare to OEM spec. Replace if out of range.
  5. Back-probe the injector connector while cranking/running to confirm PCM is commanding pulses (use a noid light or oscilloscope).
  6. If no pulse from PCM but wiring and supply are good, check continuity between injector connector and PCM driver pin for opens/shorts to ground/voltage. Repair wiring if needed.
  7. Swap the suspected injector with another cylinder and clear codes. If fault moves to the swapped cylinder, replace the injector. If it stays on cylinder 5, suspect wiring or PCM.
  8. If wiring and injector check good, check PCM grounds and power feeds. Replace PCM only after all wiring and injector options are eliminated and verified.
  9. After repair, clear codes and perform a road test and re-scan to confirm code does not return.

Likely causes

  • Corroded/loose injector connector at cylinder 5
  • Broken or shorted harness between injector and PCM
  • Injector coil open or shorted
  • Low or missing ignition/fuel system voltage to injector rail
  • PCM driver failure (less common) after wiring checks

Fault status

⚠️ Status
Injector circuit fault detected for cylinder 5 (P0205). PCM detected open/short/no pulse to injector. MIL illuminated. Inspect wiring, connector, injector and PCM driver.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P0205

GWM P — Powertrain

- Injector malfunction - cylinder 5

Brand: GWM
Views: UK: 14 EN: 27 RU: 15
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring/connectors to injector #5
  • Faulty fuel injector (stuck open, stuck closed, internal short)
  • Poor connector pin contact or corrosion
  • Blown fuse or loss of injector supply voltage
  • Faulty PCM (driver circuit) or poor PCM ground
  • Intermittent wiring damage (chafing, high resistance)

Symptoms

  • Check Engine Light (MIL) on
  • Rough idle or vibration
  • Engine misfire, often cylinder 5 related
  • Reduced power, hesitation under load
  • Poor fuel economy
  • Possible hard start or stalling

What to check

  • Scan for stored codes and freeze frame data; note related codes (misfire, fuel trim).
  • Visual inspection of injector harness/connector at cylinder 5 for damage or corrosion.
  • Wiggle test wiring while engine is running (if safe) to reproduce fault.
  • Check fuel injector supply voltage (battery/ignition) at connector with key on.
  • Measure injector coil resistance and compare to service spec.
  • Back-probe injector connector while cranking/running to confirm PCM pulse and voltage.

Signal parameters

  • Injector supply voltage: approx. battery voltage with key on (no injection commanded).
  • Injector driver: PCM switches injector to ground; expect near 0V (low) during pulse on driver side.
  • Injector coil resistance: compare to OEM spec (typical ranges vary; low-impedance injectors ~2–6 Ω, high-impedance ~10–18 Ω).
  • Injector pulse width: typically 1–10 ms depending on RPM/load; visible on oscilloscope as square pulses.
  • No pulse or continuous open circuit indicates open wiring or failed injector; constant ground indicates shorted driver.

Diagnostic algorithm

  1. Retrieve codes and live data. Confirm P0205 and note any related P02xx or misfire codes (e.g., P0305).
  2. Perform visual check of injector #5 connector and wiring for corrosion, bent pins, or damage. Repair as needed.
  3. With ignition ON (engine off), verify battery voltage at injector supply terminal of the connector.
  4. Measure injector coil resistance at the connector or removed injector; compare to OEM spec. Replace if out of range.
  5. Back-probe the injector connector while cranking/running to confirm PCM is commanding pulses (use a noid light or oscilloscope).
  6. If no pulse from PCM but wiring and supply are good, check continuity between injector connector and PCM driver pin for opens/shorts to ground/voltage. Repair wiring if needed.
  7. Swap the suspected injector with another cylinder and clear codes. If fault moves to the swapped cylinder, replace the injector. If it stays on cylinder 5, suspect wiring or PCM.
  8. If wiring and injector check good, check PCM grounds and power feeds. Replace PCM only after all wiring and injector options are eliminated and verified.
  9. After repair, clear codes and perform a road test and re-scan to confirm code does not return.

Likely causes

  • Corroded/loose injector connector at cylinder 5
  • Broken or shorted harness between injector and PCM
  • Injector coil open or shorted
  • Low or missing ignition/fuel system voltage to injector rail
  • PCM driver failure (less common) after wiring checks

Fault status

⚠️ Status
Injector circuit fault detected for cylinder 5 (P0205). PCM detected open/short/no pulse to injector. MIL illuminated. Inspect wiring, connector, injector and PCM driver.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P0205

HUMMER P — Powertrain

Injector 5 Control Circuit

Brand: HUMMER
Views: UK: 19 EN: 58 RU: 33
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring/connectors to injector #5
  • Faulty fuel injector (stuck open, stuck closed, internal short)
  • Poor connector pin contact or corrosion
  • Blown fuse or loss of injector supply voltage
  • Faulty PCM (driver circuit) or poor PCM ground
  • Intermittent wiring damage (chafing, high resistance)

Symptoms

  • Check Engine Light (MIL) on
  • Rough idle or vibration
  • Engine misfire, often cylinder 5 related
  • Reduced power, hesitation under load
  • Poor fuel economy
  • Possible hard start or stalling

What to check

  • Scan for stored codes and freeze frame data; note related codes (misfire, fuel trim).
  • Visual inspection of injector harness/connector at cylinder 5 for damage or corrosion.
  • Wiggle test wiring while engine is running (if safe) to reproduce fault.
  • Check fuel injector supply voltage (battery/ignition) at connector with key on.
  • Measure injector coil resistance and compare to service spec.
  • Back-probe injector connector while cranking/running to confirm PCM pulse and voltage.

Signal parameters

  • Injector supply voltage: approx. battery voltage with key on (no injection commanded).
  • Injector driver: PCM switches injector to ground; expect near 0V (low) during pulse on driver side.
  • Injector coil resistance: compare to OEM spec (typical ranges vary; low-impedance injectors ~2–6 Ω, high-impedance ~10–18 Ω).
  • Injector pulse width: typically 1–10 ms depending on RPM/load; visible on oscilloscope as square pulses.
  • No pulse or continuous open circuit indicates open wiring or failed injector; constant ground indicates shorted driver.

Diagnostic algorithm

  1. Retrieve codes and live data. Confirm P0205 and note any related P02xx or misfire codes (e.g., P0305).
  2. Perform visual check of injector #5 connector and wiring for corrosion, bent pins, or damage. Repair as needed.
  3. With ignition ON (engine off), verify battery voltage at injector supply terminal of the connector.
  4. Measure injector coil resistance at the connector or removed injector; compare to OEM spec. Replace if out of range.
  5. Back-probe the injector connector while cranking/running to confirm PCM is commanding pulses (use a noid light or oscilloscope).
  6. If no pulse from PCM but wiring and supply are good, check continuity between injector connector and PCM driver pin for opens/shorts to ground/voltage. Repair wiring if needed.
  7. Swap the suspected injector with another cylinder and clear codes. If fault moves to the swapped cylinder, replace the injector. If it stays on cylinder 5, suspect wiring or PCM.
  8. If wiring and injector check good, check PCM grounds and power feeds. Replace PCM only after all wiring and injector options are eliminated and verified.
  9. After repair, clear codes and perform a road test and re-scan to confirm code does not return.

Likely causes

  • Corroded/loose injector connector at cylinder 5
  • Broken or shorted harness between injector and PCM
  • Injector coil open or shorted
  • Low or missing ignition/fuel system voltage to injector rail
  • PCM driver failure (less common) after wiring checks

Fault status

⚠️ Status
Injector circuit fault detected for cylinder 5 (P0205). PCM detected open/short/no pulse to injector. MIL illuminated. Inspect wiring, connector, injector and PCM driver.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P0205

ISUZU P — Powertrain

Injector Circuit - Cylinder 5

Brand: ISUZU
Views: UK: 23 EN: 62 RU: 38
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring/connectors to injector #5
  • Faulty fuel injector (stuck open, stuck closed, internal short)
  • Poor connector pin contact or corrosion
  • Blown fuse or loss of injector supply voltage
  • Faulty PCM (driver circuit) or poor PCM ground
  • Intermittent wiring damage (chafing, high resistance)

Symptoms

  • Check Engine Light (MIL) on
  • Rough idle or vibration
  • Engine misfire, often cylinder 5 related
  • Reduced power, hesitation under load
  • Poor fuel economy
  • Possible hard start or stalling

What to check

  • Scan for stored codes and freeze frame data; note related codes (misfire, fuel trim).
  • Visual inspection of injector harness/connector at cylinder 5 for damage or corrosion.
  • Wiggle test wiring while engine is running (if safe) to reproduce fault.
  • Check fuel injector supply voltage (battery/ignition) at connector with key on.
  • Measure injector coil resistance and compare to service spec.
  • Back-probe injector connector while cranking/running to confirm PCM pulse and voltage.

Signal parameters

  • Injector supply voltage: approx. battery voltage with key on (no injection commanded).
  • Injector driver: PCM switches injector to ground; expect near 0V (low) during pulse on driver side.
  • Injector coil resistance: compare to OEM spec (typical ranges vary; low-impedance injectors ~2–6 Ω, high-impedance ~10–18 Ω).
  • Injector pulse width: typically 1–10 ms depending on RPM/load; visible on oscilloscope as square pulses.
  • No pulse or continuous open circuit indicates open wiring or failed injector; constant ground indicates shorted driver.

Diagnostic algorithm

  1. Retrieve codes and live data. Confirm P0205 and note any related P02xx or misfire codes (e.g., P0305).
  2. Perform visual check of injector #5 connector and wiring for corrosion, bent pins, or damage. Repair as needed.
  3. With ignition ON (engine off), verify battery voltage at injector supply terminal of the connector.
  4. Measure injector coil resistance at the connector or removed injector; compare to OEM spec. Replace if out of range.
  5. Back-probe the injector connector while cranking/running to confirm PCM is commanding pulses (use a noid light or oscilloscope).
  6. If no pulse from PCM but wiring and supply are good, check continuity between injector connector and PCM driver pin for opens/shorts to ground/voltage. Repair wiring if needed.
  7. Swap the suspected injector with another cylinder and clear codes. If fault moves to the swapped cylinder, replace the injector. If it stays on cylinder 5, suspect wiring or PCM.
  8. If wiring and injector check good, check PCM grounds and power feeds. Replace PCM only after all wiring and injector options are eliminated and verified.
  9. After repair, clear codes and perform a road test and re-scan to confirm code does not return.

Likely causes

  • Corroded/loose injector connector at cylinder 5
  • Broken or shorted harness between injector and PCM
  • Injector coil open or shorted
  • Low or missing ignition/fuel system voltage to injector rail
  • PCM driver failure (less common) after wiring checks

Fault status

⚠️ Status
Injector circuit fault detected for cylinder 5 (P0205). PCM detected open/short/no pulse to injector. MIL illuminated. Inspect wiring, connector, injector and PCM driver.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P0205

LAND ROVER P — Powertrain

Cylinder with injector circuit fault 5

Views: UK: 20 EN: 52 RU: 19
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring/connectors to injector #5
  • Faulty fuel injector (stuck open, stuck closed, internal short)
  • Poor connector pin contact or corrosion
  • Blown fuse or loss of injector supply voltage
  • Faulty PCM (driver circuit) or poor PCM ground
  • Intermittent wiring damage (chafing, high resistance)

Symptoms

  • Check Engine Light (MIL) on
  • Rough idle or vibration
  • Engine misfire, often cylinder 5 related
  • Reduced power, hesitation under load
  • Poor fuel economy
  • Possible hard start or stalling

What to check

  • Scan for stored codes and freeze frame data; note related codes (misfire, fuel trim).
  • Visual inspection of injector harness/connector at cylinder 5 for damage or corrosion.
  • Wiggle test wiring while engine is running (if safe) to reproduce fault.
  • Check fuel injector supply voltage (battery/ignition) at connector with key on.
  • Measure injector coil resistance and compare to service spec.
  • Back-probe injector connector while cranking/running to confirm PCM pulse and voltage.

Signal parameters

  • Injector supply voltage: approx. battery voltage with key on (no injection commanded).
  • Injector driver: PCM switches injector to ground; expect near 0V (low) during pulse on driver side.
  • Injector coil resistance: compare to OEM spec (typical ranges vary; low-impedance injectors ~2–6 Ω, high-impedance ~10–18 Ω).
  • Injector pulse width: typically 1–10 ms depending on RPM/load; visible on oscilloscope as square pulses.
  • No pulse or continuous open circuit indicates open wiring or failed injector; constant ground indicates shorted driver.

Diagnostic algorithm

  1. Retrieve codes and live data. Confirm P0205 and note any related P02xx or misfire codes (e.g., P0305).
  2. Perform visual check of injector #5 connector and wiring for corrosion, bent pins, or damage. Repair as needed.
  3. With ignition ON (engine off), verify battery voltage at injector supply terminal of the connector.
  4. Measure injector coil resistance at the connector or removed injector; compare to OEM spec. Replace if out of range.
  5. Back-probe the injector connector while cranking/running to confirm PCM is commanding pulses (use a noid light or oscilloscope).
  6. If no pulse from PCM but wiring and supply are good, check continuity between injector connector and PCM driver pin for opens/shorts to ground/voltage. Repair wiring if needed.
  7. Swap the suspected injector with another cylinder and clear codes. If fault moves to the swapped cylinder, replace the injector. If it stays on cylinder 5, suspect wiring or PCM.
  8. If wiring and injector check good, check PCM grounds and power feeds. Replace PCM only after all wiring and injector options are eliminated and verified.
  9. After repair, clear codes and perform a road test and re-scan to confirm code does not return.

Likely causes

  • Corroded/loose injector connector at cylinder 5
  • Broken or shorted harness between injector and PCM
  • Injector coil open or shorted
  • Low or missing ignition/fuel system voltage to injector rail
  • PCM driver failure (less common) after wiring checks

Fault status

⚠️ Status
Injector circuit fault detected for cylinder 5 (P0205). PCM detected open/short/no pulse to injector. MIL illuminated. Inspect wiring, connector, injector and PCM driver.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
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Code

P0205

MITSUBISHI P — Powertrain

No.5 injector system

Views: UK: 17 EN: 54 RU: 26
AI status
Completed
ready
Completed 100%
Page language: EN

Causes

  • Open or shorted wiring/connectors to injector #5
  • Faulty fuel injector (stuck open, stuck closed, internal short)
  • Poor connector pin contact or corrosion
  • Blown fuse or loss of injector supply voltage
  • Faulty PCM (driver circuit) or poor PCM ground
  • Intermittent wiring damage (chafing, high resistance)

Symptoms

  • Check Engine Light (MIL) on
  • Rough idle or vibration
  • Engine misfire, often cylinder 5 related
  • Reduced power, hesitation under load
  • Poor fuel economy
  • Possible hard start or stalling

What to check

  • Scan for stored codes and freeze frame data; note related codes (misfire, fuel trim).
  • Visual inspection of injector harness/connector at cylinder 5 for damage or corrosion.
  • Wiggle test wiring while engine is running (if safe) to reproduce fault.
  • Check fuel injector supply voltage (battery/ignition) at connector with key on.
  • Measure injector coil resistance and compare to service spec.
  • Back-probe injector connector while cranking/running to confirm PCM pulse and voltage.

Signal parameters

  • Injector supply voltage: approx. battery voltage with key on (no injection commanded).
  • Injector driver: PCM switches injector to ground; expect near 0V (low) during pulse on driver side.
  • Injector coil resistance: compare to OEM spec (typical ranges vary; low-impedance injectors ~2–6 Ω, high-impedance ~10–18 Ω).
  • Injector pulse width: typically 1–10 ms depending on RPM/load; visible on oscilloscope as square pulses.
  • No pulse or continuous open circuit indicates open wiring or failed injector; constant ground indicates shorted driver.

Diagnostic algorithm

  1. Retrieve codes and live data. Confirm P0205 and note any related P02xx or misfire codes (e.g., P0305).
  2. Perform visual check of injector #5 connector and wiring for corrosion, bent pins, or damage. Repair as needed.
  3. With ignition ON (engine off), verify battery voltage at injector supply terminal of the connector.
  4. Measure injector coil resistance at the connector or removed injector; compare to OEM spec. Replace if out of range.
  5. Back-probe the injector connector while cranking/running to confirm PCM is commanding pulses (use a noid light or oscilloscope).
  6. If no pulse from PCM but wiring and supply are good, check continuity between injector connector and PCM driver pin for opens/shorts to ground/voltage. Repair wiring if needed.
  7. Swap the suspected injector with another cylinder and clear codes. If fault moves to the swapped cylinder, replace the injector. If it stays on cylinder 5, suspect wiring or PCM.
  8. If wiring and injector check good, check PCM grounds and power feeds. Replace PCM only after all wiring and injector options are eliminated and verified.
  9. After repair, clear codes and perform a road test and re-scan to confirm code does not return.

Likely causes

  • Corroded/loose injector connector at cylinder 5
  • Broken or shorted harness between injector and PCM
  • Injector coil open or shorted
  • Low or missing ignition/fuel system voltage to injector rail
  • PCM driver failure (less common) after wiring checks

Fault status

⚠️ Status
Injector circuit fault detected for cylinder 5 (P0205). PCM detected open/short/no pulse to injector. MIL illuminated. Inspect wiring, connector, injector and PCM driver.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours
Your experience will help others
+100 karma for a short comment :)
Send to email