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Home / DTC / P1160 — Oxygen sensor bank of heated exhaust gases 2 heater

P1160 — Oxygen sensor bank of heated exhaust gases 2 heater

Detailed page for trouble code P1160.

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P1160

LAND ROVER P — Powertrain

Oxygen sensor bank of heated exhaust gases 2 heater

Brand: LAND ROVER
Type: P — Powertrain
Views: UK: 3 EN: 7 RU: 12
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Page language: EN

Causes

  • Blown fuse or tripped relay supplying the O2 sensor heater circuit
  • Open, shorted or high-resistance wiring or damaged connector in the heater circuit
  • Failed heated oxygen sensor (internal heater element open or shorted)
  • Corroded or loose connector pins or poor ground
  • Power-side driver or ground driver fault in the engine control module (ECM/PCM)

Symptoms

  • Check Engine Light (MIL) illuminated
  • Reduced cold-start emissions performance; possible failed emissions test
  • Extended time to enter closed-loop fuel control (poor fuel economy)
  • Possible rough idle or drivability issues during cold start
  • Diagnostic trouble codes related to O2 sensors or heater circuits

What to check

  • Read and record freeze-frame data and all current/related DTCs with a scan tool
  • Visually inspect wiring and connectors at bank 2 oxygen sensor(s) for damage, corrosion or loose pins
  • Check relevant fuses and relays for the heater circuit
  • Measure heater element resistance (sensor disconnected) and compare to specification or typical range
  • With ignition ON (engine OFF) backprobe heater supply and ground to confirm proper voltage and switching
  • Perform a wiggle test on wiring/connectors while monitoring heater circuit to look for intermittent faults

Signal parameters

  • Heater resistance (typical range for many HO2S: ~2–14 ohms) — consult vehicle spec
  • Supply voltage to heater circuit (near battery voltage when commanded ON, ~12 V)
  • Heater current draw when energized (typical: ~0.5–3 A depending on sensor)
  • Heater driver duty cycle or command state from PCM (on/off or PWM) as reported by scan tool
  • Oxygen sensor signal voltage once warmed (approx. 0.1–0.9 V for zirconia sensors) — indicates heater brought sensor to operating temperature

Diagnostic algorithm

  1. Retrieve and record all codes and freeze-frame; confirm P1160 is current and note any related codes (other O2 heater or sensor codes).
  2. Perform visual inspection of harness and connector at the bank 2 oxygen sensor(s). Repair any obvious damage or corrosion.
  3. Check fuses/relays that feed O2 heater circuits; replace any blown fuses and retest.
  4. Disconnect the sensor connector and measure heater element resistance with a multimeter (engine OFF). Compare to vehicle specification or typical range. An open or very high resistance indicates a failed heater.
  5. With connector disconnected and ignition ON (engine OFF), check for battery voltage on the heater supply pin and continuity to ground on the heater ground pin (or check switching signal from PCM as specified).
  6. If supply and ground are present and correct, reconnect sensor and use a scan tool or ammeter to measure heater current while commanded on; watch for intermittent behavior during wiggle testing of harness.
  7. If wiring and supply are correct but heater element is faulty, replace the oxygen sensor (use correct bank/sensor location).
  8. After repair, clear codes and perform drive cycle to confirm proper operation and that the code does not return. If code persists and wiring/connector checks OK, suspect PCM driver fault and consider module diagnosis or replacement only after verifying with manufacturer procedures.

Likely causes

  • Broken wire or chafed harness to bank 2 oxygen sensor heater
  • Seized/corroded sensor connector preventing heater supply
  • Heater element inside oxygen sensor has failed (out of spec resistance)
  • Blown fuse for the heater circuit or failed relay
  • ECM heater driver transistor fault (less common)

Fault status

⚠️ Status
Heater circuit fault detected for bank 2 oxygen sensor heater — circuit open/short/high resistance or heater failure. Check sensor, wiring, fuse/relay, and ECM heater driver.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 0.5-2.0 hours

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