Code
P0276
Generic
P — Powertrain
Cylinder 6 Injector A Circuit Low
Views:
UK: 8
EN: 13
RU: 14
AI status
Completed
Completed
100%
Causes
- Low voltage on injector control circuit
- Open or high-resistance wiring/connector to injector
- Short to ground on injector signal or supply circuit
- Corroded or damaged injector connector pins
- Faulty fuel injector (internal short/open)
- Faulty powertrain control module (PCM) driver transistor
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Rough idle or engine misfire on cylinder 6
- Reduced engine power or hesitation under load
- Increased fuel consumption and emissions
- Possible inability to start if injector not operating
What to check
- Retrieve freeze frame and live data with a scan tool; note related codes (e.g., misfire P0306)
- Perform visual inspection of injector 6 connector, wiring harness, and nearby components for damage, corrosion or pin push-out
- Check battery voltage and chassis/body/engine grounds for integrity
- Wiggle test harness while monitoring data to look for intermittent changes
- Compare injector resistance to manufacturer specification
- Back-probe injector connector and measure voltage and switching with key ON and engine cranking/running
Signal parameters
- Injector coil resistance: refer to vehicle spec (typical range may be 2–16 Ω depending on high/low impedance type)
- Connector supply voltage (key ON, engine OFF): approx. battery voltage (~12 V) on the supply/positive side
- Injector driver output (PCM) switching: pulses between near 0 V (grounded) and supply voltage when commanded; amplitude and waveform vary by system
- Injector pulse width and duty cycle: variable with RPM/load — verify with scan tool/oscilloscope
- Current draw during activation: injector-specific; low current or no switching indicates open/low circuit
Diagnostic algorithm
- Connect scan tool, record freeze frame, pending and stored codes, and live cylinder trim/misfire data for cylinder 6.
- Visual inspection: check injector 6 connector, wiring, loom, and chassis ground for corrosion, damage, or loose pins.
- With ignition OFF disconnect injector connector and measure injector coil resistance (bench value) against spec. If open or shorted, replace injector.
- With key ON (engine OFF) back-probe injector supply terminal: verify battery voltage present. If supply missing, trace/fuse/relay to battery.
- Back-probe PCM/injector control terminal while cranking or commanding injector with a bidirectional tool: verify switching waveform (PCM should switch the driver). Low or no switching suggests wiring short to ground or PCM driver fault.
- If supply and wiring check good, swap injector 6 with another cylinder’s injector and see if the code follows the injector (confirms injector fault) or stays with cylinder (confirms wiring/PCM).
- If code remains on cylinder 6 after swapping, inspect/repair wiring harness between injector and PCM (repair chafes, replace connector, repair pins).
- If wiring and injector are good, test/replace PCM or perform module bench testing per manufacturer procedures.
- Clear codes and test drive to confirm repair. Document findings and parts replaced.
Likely causes
- Corroded/damaged connector or wiring to injector 6
- Open or short in the injector harness (pin pushed out, chafing to ground)
- Failed injector solenoid (internal short or open)
- Poor or intermittent ground or battery feed to injector supply
- PCM injector driver fault (less common)
Fault status
Status
Cylinder 6 Injector A Circuit Low — electrical low voltage on injector 6 drive circuit
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
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Code
P0276
GWM
P — Powertrain
- Low indicator of the chain of injector 6 cylinder
Views:
UK: 1
EN: 3
RU: 1
AI status
Completed
Completed
100%
Causes
- Low voltage on injector control circuit
- Open or high-resistance wiring/connector to injector
- Short to ground on injector signal or supply circuit
- Corroded or damaged injector connector pins
- Faulty fuel injector (internal short/open)
- Faulty powertrain control module (PCM) driver transistor
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Rough idle or engine misfire on cylinder 6
- Reduced engine power or hesitation under load
- Increased fuel consumption and emissions
- Possible inability to start if injector not operating
What to check
- Retrieve freeze frame and live data with a scan tool; note related codes (e.g., misfire P0306)
- Perform visual inspection of injector 6 connector, wiring harness, and nearby components for damage, corrosion or pin push-out
- Check battery voltage and chassis/body/engine grounds for integrity
- Wiggle test harness while monitoring data to look for intermittent changes
- Compare injector resistance to manufacturer specification
- Back-probe injector connector and measure voltage and switching with key ON and engine cranking/running
Signal parameters
- Injector coil resistance: refer to vehicle spec (typical range may be 2–16 Ω depending on high/low impedance type)
- Connector supply voltage (key ON, engine OFF): approx. battery voltage (~12 V) on the supply/positive side
- Injector driver output (PCM) switching: pulses between near 0 V (grounded) and supply voltage when commanded; amplitude and waveform vary by system
- Injector pulse width and duty cycle: variable with RPM/load — verify with scan tool/oscilloscope
- Current draw during activation: injector-specific; low current or no switching indicates open/low circuit
Diagnostic algorithm
- Connect scan tool, record freeze frame, pending and stored codes, and live cylinder trim/misfire data for cylinder 6.
- Visual inspection: check injector 6 connector, wiring, loom, and chassis ground for corrosion, damage, or loose pins.
- With ignition OFF disconnect injector connector and measure injector coil resistance (bench value) against spec. If open or shorted, replace injector.
- With key ON (engine OFF) back-probe injector supply terminal: verify battery voltage present. If supply missing, trace/fuse/relay to battery.
- Back-probe PCM/injector control terminal while cranking or commanding injector with a bidirectional tool: verify switching waveform (PCM should switch the driver). Low or no switching suggests wiring short to ground or PCM driver fault.
- If supply and wiring check good, swap injector 6 with another cylinder’s injector and see if the code follows the injector (confirms injector fault) or stays with cylinder (confirms wiring/PCM).
- If code remains on cylinder 6 after swapping, inspect/repair wiring harness between injector and PCM (repair chafes, replace connector, repair pins).
- If wiring and injector are good, test/replace PCM or perform module bench testing per manufacturer procedures.
- Clear codes and test drive to confirm repair. Document findings and parts replaced.
Likely causes
- Corroded/damaged connector or wiring to injector 6
- Open or short in the injector harness (pin pushed out, chafing to ground)
- Failed injector solenoid (internal short or open)
- Poor or intermittent ground or battery feed to injector supply
- PCM injector driver fault (less common)
Fault status
Status
Cylinder 6 Injector A Circuit Low — electrical low voltage on injector 6 drive circuit
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Your experience will help others
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0
Send to email
Code
P0276
HUMMER
P — Powertrain
Cylinder 6 Injector Circuit Low
Views:
UK: 1
EN: 2
RU: 3
AI status
Completed
Completed
100%
Causes
- Low voltage on injector control circuit
- Open or high-resistance wiring/connector to injector
- Short to ground on injector signal or supply circuit
- Corroded or damaged injector connector pins
- Faulty fuel injector (internal short/open)
- Faulty powertrain control module (PCM) driver transistor
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Rough idle or engine misfire on cylinder 6
- Reduced engine power or hesitation under load
- Increased fuel consumption and emissions
- Possible inability to start if injector not operating
What to check
- Retrieve freeze frame and live data with a scan tool; note related codes (e.g., misfire P0306)
- Perform visual inspection of injector 6 connector, wiring harness, and nearby components for damage, corrosion or pin push-out
- Check battery voltage and chassis/body/engine grounds for integrity
- Wiggle test harness while monitoring data to look for intermittent changes
- Compare injector resistance to manufacturer specification
- Back-probe injector connector and measure voltage and switching with key ON and engine cranking/running
Signal parameters
- Injector coil resistance: refer to vehicle spec (typical range may be 2–16 Ω depending on high/low impedance type)
- Connector supply voltage (key ON, engine OFF): approx. battery voltage (~12 V) on the supply/positive side
- Injector driver output (PCM) switching: pulses between near 0 V (grounded) and supply voltage when commanded; amplitude and waveform vary by system
- Injector pulse width and duty cycle: variable with RPM/load — verify with scan tool/oscilloscope
- Current draw during activation: injector-specific; low current or no switching indicates open/low circuit
Diagnostic algorithm
- Connect scan tool, record freeze frame, pending and stored codes, and live cylinder trim/misfire data for cylinder 6.
- Visual inspection: check injector 6 connector, wiring, loom, and chassis ground for corrosion, damage, or loose pins.
- With ignition OFF disconnect injector connector and measure injector coil resistance (bench value) against spec. If open or shorted, replace injector.
- With key ON (engine OFF) back-probe injector supply terminal: verify battery voltage present. If supply missing, trace/fuse/relay to battery.
- Back-probe PCM/injector control terminal while cranking or commanding injector with a bidirectional tool: verify switching waveform (PCM should switch the driver). Low or no switching suggests wiring short to ground or PCM driver fault.
- If supply and wiring check good, swap injector 6 with another cylinder’s injector and see if the code follows the injector (confirms injector fault) or stays with cylinder (confirms wiring/PCM).
- If code remains on cylinder 6 after swapping, inspect/repair wiring harness between injector and PCM (repair chafes, replace connector, repair pins).
- If wiring and injector are good, test/replace PCM or perform module bench testing per manufacturer procedures.
- Clear codes and test drive to confirm repair. Document findings and parts replaced.
Likely causes
- Corroded/damaged connector or wiring to injector 6
- Open or short in the injector harness (pin pushed out, chafing to ground)
- Failed injector solenoid (internal short or open)
- Poor or intermittent ground or battery feed to injector supply
- PCM injector driver fault (less common)
Fault status
Status
Cylinder 6 Injector A Circuit Low — electrical low voltage on injector 6 drive circuit
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email
Code
P0276
LAND ROVER
P — Powertrain
Injector circuit of cylinder 6 low
Views:
UK: 1
EN: 3
RU: 2
AI status
Completed
Completed
100%
Causes
- Low voltage on injector control circuit
- Open or high-resistance wiring/connector to injector
- Short to ground on injector signal or supply circuit
- Corroded or damaged injector connector pins
- Faulty fuel injector (internal short/open)
- Faulty powertrain control module (PCM) driver transistor
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Rough idle or engine misfire on cylinder 6
- Reduced engine power or hesitation under load
- Increased fuel consumption and emissions
- Possible inability to start if injector not operating
What to check
- Retrieve freeze frame and live data with a scan tool; note related codes (e.g., misfire P0306)
- Perform visual inspection of injector 6 connector, wiring harness, and nearby components for damage, corrosion or pin push-out
- Check battery voltage and chassis/body/engine grounds for integrity
- Wiggle test harness while monitoring data to look for intermittent changes
- Compare injector resistance to manufacturer specification
- Back-probe injector connector and measure voltage and switching with key ON and engine cranking/running
Signal parameters
- Injector coil resistance: refer to vehicle spec (typical range may be 2–16 Ω depending on high/low impedance type)
- Connector supply voltage (key ON, engine OFF): approx. battery voltage (~12 V) on the supply/positive side
- Injector driver output (PCM) switching: pulses between near 0 V (grounded) and supply voltage when commanded; amplitude and waveform vary by system
- Injector pulse width and duty cycle: variable with RPM/load — verify with scan tool/oscilloscope
- Current draw during activation: injector-specific; low current or no switching indicates open/low circuit
Diagnostic algorithm
- Connect scan tool, record freeze frame, pending and stored codes, and live cylinder trim/misfire data for cylinder 6.
- Visual inspection: check injector 6 connector, wiring, loom, and chassis ground for corrosion, damage, or loose pins.
- With ignition OFF disconnect injector connector and measure injector coil resistance (bench value) against spec. If open or shorted, replace injector.
- With key ON (engine OFF) back-probe injector supply terminal: verify battery voltage present. If supply missing, trace/fuse/relay to battery.
- Back-probe PCM/injector control terminal while cranking or commanding injector with a bidirectional tool: verify switching waveform (PCM should switch the driver). Low or no switching suggests wiring short to ground or PCM driver fault.
- If supply and wiring check good, swap injector 6 with another cylinder’s injector and see if the code follows the injector (confirms injector fault) or stays with cylinder (confirms wiring/PCM).
- If code remains on cylinder 6 after swapping, inspect/repair wiring harness between injector and PCM (repair chafes, replace connector, repair pins).
- If wiring and injector are good, test/replace PCM or perform module bench testing per manufacturer procedures.
- Clear codes and test drive to confirm repair. Document findings and parts replaced.
Likely causes
- Corroded/damaged connector or wiring to injector 6
- Open or short in the injector harness (pin pushed out, chafing to ground)
- Failed injector solenoid (internal short or open)
- Poor or intermittent ground or battery feed to injector supply
- PCM injector driver fault (less common)
Fault status
Status
Cylinder 6 Injector A Circuit Low — electrical low voltage on injector 6 drive circuit
Repair difficulty: Medium
Diagnostic time: 0.5-2.0 hours
Your experience will help others
+100 karma for a short comment :)
Was this AI description helpful?
Your feedback helps improve AI descriptions.
👍 Like
0
👎 Dislike
0
Send to email