Code
P2080
Generic
P — Powertrain
Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 1 Sensor 1
Views:
UK: 18
EN: 33
RU: 80
AI status
Completed
Completed
100%
Causes
- Failed or out-of-spec EGT sensor (Bank 1, Sensor 1)
- Open, shorted or damaged wiring between EGT sensor and ECM
- Corroded, loose or contaminated connector/pins at the sensor or ECM
- Exhaust leak or physical damage to sensor causing incorrect readings
- Sensor contamination (soot, oil, or metallic deposits)
- Blown fuse or faulty heater supply (if sensor has a heater)
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine performance or limp mode depending on strategy
- Reduced or inhibited diesel particulate filter (DPF) regeneration or turbo control issues
- Poor fuel economy or increased emissions
- Stored or pending EGT-related faults and possibly related diagnostic codes
What to check
- Read freeze frame and full live data with a scan tool; note EGT value, heater status, and related PIDs
- Verify the DTC is current and attempt a key-cycle/clear to see if it returns
- Visually inspect sensor, wiring harness and connector for damage, corrosion, soot or exhaust leaks
- Back-probe the sensor connector and monitor signal while engine warms or during commanded regen (if safe)
- Check continuity and resistance of sensor leads to the ECM; check for shorts to ground or battery
- Verify heater supply voltage and ground (if sensor has heater circuit); check associated fuse/relay
Signal parameters
- Sensor type: thermocouple or thermistor style (vehicle-specific). Output should rise as exhaust temperature increases.
- Thermocouple output: typically millivolt range that increases with temperature (consult vehicle spec for exact mV-to-°C conversion).
- ECM-logged EGT PID: normally increases smoothly with load/regen — abrupt jumps, stuck low/high, or out-of-range values indicate a problem.
- Heater circuit (if equipped): commanded ON should show battery voltage at supply pin and low resistance to ground when powered. Heater resistance is typically low (refer to service data).
- Open-circuit: infinite or very high resistance; short-to-ground: near 0 ohms; short-to-voltage: sensor voltage near battery voltage (vehicle-specific).
Diagnostic algorithm
- Obtain freeze frame and live data for the EGT sensor PID(s) and related channels (EGT heater, engine load, exhaust-related PIDs).
- Confirm the DTC is P2080 (Bank 1 Sensor 1). Clear codes and attempt to reproduce the fault under the same conditions.
- Perform visual inspection of the sensor, mounting thread, wiring harness, and connector for damage, heat exposure or contamination. Repair obvious damage.
- With ignition on (engine off), back-probe connector: measure sensor reference and ground continuity to the ECM. Verify no open or short circuits.
- If sensor has a heater, command the heater ON with a scan tool and verify heater supply voltage and that heater current/coil resistance is within specification.
- Warm engine or safely apply heat to the sensor (use heat-sourcing methods appropriate for work safety) while monitoring sensor PID: sensor output should rise smoothly. If it does not, suspect sensor or wiring.
- Measure sensor resistance/voltage per service manual. Replace sensor only after confirming wiring integrity and connector condition.
- If wiring is faulty, repair/replace harness and connectors, then retest. If wiring checks OK and replacement sensor does not clear the fault, consider ECM input circuit testing or replacement per manufacturer guidance.
- After repair, clear codes and perform road or load test to verify the code does not return and that EGT readings behave correctly.
Likely causes
- Wiring/connectors (most common)
- Faulty EGT sensor
- Contaminated sensor or exhaust leak
- Heater supply or ground problem (if equipped)
Fault status
Status
EGT Sensor Circuit Range/Performance — Bank 1 Sensor 1. The ECM detected an exhaust gas temperature sensor signal that is outside the expected range or otherwise inconsistent with normal operation for Bank 1 Sensor 1.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Code
P2080
LAND ROVER
P — Powertrain
Exhaust Gas Temperature Sensor Circuit Range performance - bank 1, sensor 1
Views:
UK: 6
EN: 23
RU: 56
AI status
Completed
Completed
100%
Causes
- Failed or out-of-spec EGT sensor (Bank 1, Sensor 1)
- Open, shorted or damaged wiring between EGT sensor and ECM
- Corroded, loose or contaminated connector/pins at the sensor or ECM
- Exhaust leak or physical damage to sensor causing incorrect readings
- Sensor contamination (soot, oil, or metallic deposits)
- Blown fuse or faulty heater supply (if sensor has a heater)
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine performance or limp mode depending on strategy
- Reduced or inhibited diesel particulate filter (DPF) regeneration or turbo control issues
- Poor fuel economy or increased emissions
- Stored or pending EGT-related faults and possibly related diagnostic codes
What to check
- Read freeze frame and full live data with a scan tool; note EGT value, heater status, and related PIDs
- Verify the DTC is current and attempt a key-cycle/clear to see if it returns
- Visually inspect sensor, wiring harness and connector for damage, corrosion, soot or exhaust leaks
- Back-probe the sensor connector and monitor signal while engine warms or during commanded regen (if safe)
- Check continuity and resistance of sensor leads to the ECM; check for shorts to ground or battery
- Verify heater supply voltage and ground (if sensor has heater circuit); check associated fuse/relay
Signal parameters
- Sensor type: thermocouple or thermistor style (vehicle-specific). Output should rise as exhaust temperature increases.
- Thermocouple output: typically millivolt range that increases with temperature (consult vehicle spec for exact mV-to-°C conversion).
- ECM-logged EGT PID: normally increases smoothly with load/regen — abrupt jumps, stuck low/high, or out-of-range values indicate a problem.
- Heater circuit (if equipped): commanded ON should show battery voltage at supply pin and low resistance to ground when powered. Heater resistance is typically low (refer to service data).
- Open-circuit: infinite or very high resistance; short-to-ground: near 0 ohms; short-to-voltage: sensor voltage near battery voltage (vehicle-specific).
Diagnostic algorithm
- Obtain freeze frame and live data for the EGT sensor PID(s) and related channels (EGT heater, engine load, exhaust-related PIDs).
- Confirm the DTC is P2080 (Bank 1 Sensor 1). Clear codes and attempt to reproduce the fault under the same conditions.
- Perform visual inspection of the sensor, mounting thread, wiring harness, and connector for damage, heat exposure or contamination. Repair obvious damage.
- With ignition on (engine off), back-probe connector: measure sensor reference and ground continuity to the ECM. Verify no open or short circuits.
- If sensor has a heater, command the heater ON with a scan tool and verify heater supply voltage and that heater current/coil resistance is within specification.
- Warm engine or safely apply heat to the sensor (use heat-sourcing methods appropriate for work safety) while monitoring sensor PID: sensor output should rise smoothly. If it does not, suspect sensor or wiring.
- Measure sensor resistance/voltage per service manual. Replace sensor only after confirming wiring integrity and connector condition.
- If wiring is faulty, repair/replace harness and connectors, then retest. If wiring checks OK and replacement sensor does not clear the fault, consider ECM input circuit testing or replacement per manufacturer guidance.
- After repair, clear codes and perform road or load test to verify the code does not return and that EGT readings behave correctly.
Likely causes
- Wiring/connectors (most common)
- Faulty EGT sensor
- Contaminated sensor or exhaust leak
- Heater supply or ground problem (if equipped)
Fault status
Status
EGT Sensor Circuit Range/Performance — Bank 1 Sensor 1. The ECM detected an exhaust gas temperature sensor signal that is outside the expected range or otherwise inconsistent with normal operation for Bank 1 Sensor 1.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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Repair manuals for LAND ROVER
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Land Rover Defender 300Tdi — Workshop Manual (1996 model year)
Workshop Manual199,00 UAH
Land Rover Defender Workshop Manual Supplement & Body Repair Manual (1999 & 2002 MY)
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Land Rover Range Rover — Electrical Library (LRL 0453ENG, 2002)
Workshop Manual199,00 UAH
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Code
P2080
MERCEDES-BENZ
P — Powertrain
Exhaust Gas Temperature Sensor Circuit Range/Performance (Bank 1 Sensor 1)
Views:
UK: 12
EN: 22
RU: 70
AI status
Completed
Completed
100%
Causes
- Failed or out-of-spec EGT sensor (Bank 1, Sensor 1)
- Open, shorted or damaged wiring between EGT sensor and ECM
- Corroded, loose or contaminated connector/pins at the sensor or ECM
- Exhaust leak or physical damage to sensor causing incorrect readings
- Sensor contamination (soot, oil, or metallic deposits)
- Blown fuse or faulty heater supply (if sensor has a heater)
Symptoms
- Malfunction Indicator Lamp (MIL) illuminated
- Reduced engine performance or limp mode depending on strategy
- Reduced or inhibited diesel particulate filter (DPF) regeneration or turbo control issues
- Poor fuel economy or increased emissions
- Stored or pending EGT-related faults and possibly related diagnostic codes
What to check
- Read freeze frame and full live data with a scan tool; note EGT value, heater status, and related PIDs
- Verify the DTC is current and attempt a key-cycle/clear to see if it returns
- Visually inspect sensor, wiring harness and connector for damage, corrosion, soot or exhaust leaks
- Back-probe the sensor connector and monitor signal while engine warms or during commanded regen (if safe)
- Check continuity and resistance of sensor leads to the ECM; check for shorts to ground or battery
- Verify heater supply voltage and ground (if sensor has heater circuit); check associated fuse/relay
Signal parameters
- Sensor type: thermocouple or thermistor style (vehicle-specific). Output should rise as exhaust temperature increases.
- Thermocouple output: typically millivolt range that increases with temperature (consult vehicle spec for exact mV-to-°C conversion).
- ECM-logged EGT PID: normally increases smoothly with load/regen — abrupt jumps, stuck low/high, or out-of-range values indicate a problem.
- Heater circuit (if equipped): commanded ON should show battery voltage at supply pin and low resistance to ground when powered. Heater resistance is typically low (refer to service data).
- Open-circuit: infinite or very high resistance; short-to-ground: near 0 ohms; short-to-voltage: sensor voltage near battery voltage (vehicle-specific).
Diagnostic algorithm
- Obtain freeze frame and live data for the EGT sensor PID(s) and related channels (EGT heater, engine load, exhaust-related PIDs).
- Confirm the DTC is P2080 (Bank 1 Sensor 1). Clear codes and attempt to reproduce the fault under the same conditions.
- Perform visual inspection of the sensor, mounting thread, wiring harness, and connector for damage, heat exposure or contamination. Repair obvious damage.
- With ignition on (engine off), back-probe connector: measure sensor reference and ground continuity to the ECM. Verify no open or short circuits.
- If sensor has a heater, command the heater ON with a scan tool and verify heater supply voltage and that heater current/coil resistance is within specification.
- Warm engine or safely apply heat to the sensor (use heat-sourcing methods appropriate for work safety) while monitoring sensor PID: sensor output should rise smoothly. If it does not, suspect sensor or wiring.
- Measure sensor resistance/voltage per service manual. Replace sensor only after confirming wiring integrity and connector condition.
- If wiring is faulty, repair/replace harness and connectors, then retest. If wiring checks OK and replacement sensor does not clear the fault, consider ECM input circuit testing or replacement per manufacturer guidance.
- After repair, clear codes and perform road or load test to verify the code does not return and that EGT readings behave correctly.
Likely causes
- Wiring/connectors (most common)
- Faulty EGT sensor
- Contaminated sensor or exhaust leak
- Heater supply or ground problem (if equipped)
Fault status
Status
EGT Sensor Circuit Range/Performance — Bank 1 Sensor 1. The ECM detected an exhaust gas temperature sensor signal that is outside the expected range or otherwise inconsistent with normal operation for Bank 1 Sensor 1.
Repair difficulty: Medium
Diagnostic time: 1.0-3.0 hours
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